You say all this, but don't understand the sacrifices.
Hebrews 10 is quoting Psalm 40.
Are offerings soothing to God or not:
Then Noah built an altar to Adonai and he took of every clean domestic animal and of every clean flying creature and he offered burnt offerings on the altar. 21 When Adonai smelled the soothing aroma, Genesis 8:20-21a
Both Hebrews 10 and Psalm 40 state that God did not desire the burnt and sin offerings, yet we also know He commanded for them to be done. The burnt offerings were offered every day. It was the first and the last offering each day. They plus other offerings are a sweet aroma to God:
Exodus 29:18 - Then you are to offer the whole ram up in smoke on the altar. It is a burnt offering to Adonai, a sweet aroma, an offering made by fire to Adonai.
Exodus 29:25 - hen you are to take them out of their hands and offer them up in smoke on the altar on top of the burnt offering, as a sweet aroma before Adonai, an offering made by fire to Adonai.
Exodus 29:41 - The other lamb you are to offer at dusk, like the grain offering and drink offering of the morning, as a sweet aroma, an offering made by fire to Adonai.
Leviticus 1:9 - But its innards and its legs he is to wash with water. The kohen should burn it all up as smoke on the altar, for a burnt offering made by firea soothing aroma to Adonai.
Leviticus 1:13 - but the innards and the legs he is to wash with water. The kohen is to offer it all, and burn it on the altar. It is a burnt offering, made by firea soothing aroma to Adonai.
Leviticus 1:17 - He should tear it by its wings, but not divide it up. The kohen should burn it upon the altar, on the wood that is on the fire. It is a burnt offering, made by firea soothing aroma to Adonai.
Leviticus 2:2 - He is to bring it to Aaron's sons, the kohanim, and he shall take from there his handful of its fine flour, and of its oil, with all its frankincense. Then the kohen shall burn up as smoke its memorial portion on the altar, an offering made by firea soothing aroma to Adonai.
Leviticus 2:9 - The kohen is to take from the grain offering its memorial portion, and burn it up as smoke on the altar, an offering made by firea soothing aroma to Adonai.
Numbers 15:3 - and you are presenting a fire offering to Adonaia burnt offering or a sacrifice to mark fulfilling a vow, a freewill offering, or during moadimto present a pleasing aroma to Adonai, from the herd or from the flock,
Numbers 18:17 - But the firstborn of the ox, sheep or goat you are not to redeem. They are holy. You are to sprinkle their blood on the altar, and their fat you are to burn as a fire offering, a pleasing aroma to Adonai.
Numbers 29:36 - You are to offer to Adonai a burnt offering, a fire offering, a pleasing aroma, one bull, one ram, and seven male lambs a year old without defect,
There are many more verses which state the same thing. God commanded the sacrifices, which are a sweet aroma to Him, yet it appears you think God did not desire them. So God had Solomon build the Temple ((obviously after David's Psalm 40), which the Shekinah of God resided in, and sacrifice after sacrifice was done based on His word. They were sweet aroma's to Him, yet He did not desire them?
Don't think Ezekiel 40-48 is the Millennial Kingdom (you didn't say it, but others have)? Fine. Let's look at other passages:
Read Zechariah 14...towards the end it says In fact every pot in Jerusalem and in Judah will be Holy to Adonai-Tzva'ot, so that everyone who comes to sacrifice will take them, and cook in them. In that day there will no longer be a Canaanite in the House of Adonai-Tzva'ot.
Clearly Zechariah 14 is future. Yet, sacrifices will continue.
Isaiah 56 still future - v6-7 - Also the foreigners who join themselves to Adonai, to minister to Him,
and to love the Name of Adonai,and to be His servantsall who keep from profaning Shabbat, and hold fast to My covenant7 these I will bring to My holy mountain, and let them rejoice in My House of Prayer. Their burnt offerings and sacrifices will be acceptable on My altar. For My House will be called a House of Prayer for all nations."
So God is going to have something He really did not desire continue to occur in the Millennial Kingdom?
Zechariah 8 still future....v18-23 - not sacrifices, but yet prevalent b/c of the tzitzit - Again the word of Adonai-Tzva'ot came saying: 19 "Thus says Adonai-Tzva'ot, "The fast of the fourth, the fast of the fifth, the fast of the seventh and the fast of the tenth month will become joy, gladness and cheerful moadim. Therefore, love truth and shalom!' 20 Thus says Adonai-Tzva'ot, "Peoples and the inhabitants of many cities will again come. 21 The inhabitants of one city will go to another saying 'Let us go to entreat the favor of Adonai and to seek Adonai-Tzva'ot. I also am going.' 22 Indeed, many peoples and powerful nations will come to seek Adonai-Tzva'ot in Jerusalem, and to entreat the favor of Adonai." 23 Thus says Adonai-Tzva'ot, "In those days it will come to pass that ten men from every language of the nations will grasp the corner of the garment of a Jew saying, 'Let us go with you, for we have heard that God is with you.'"
All the sacrifices point to the Messiah. He was not a literal sacrifice, yet He offered His life for those who would truly repent of their sins. These sacrifices as the ones before, did not take away the sins, yet they all point to the Messiah who did take away all sins...for those who repent.