RYOBI fan or sucker here, some tools/etc great, others Radio Shack old days junk
Tree limbs long handle loppers can't do and Shark saws too much sweat =
Ryobi sawsall but buy the NEW blades = are great, come in a set but still have to be careful.
Original blades are too weak and need a pro handler.
THEN if limbs larger ....
Do NOT use Ryobi chain saw! Leaks bar oil, bounces on hard oak & has to be forced to cut oak (OK for soft wood but not ideal) save your money UNLESS you buy a top dollar sharp chain for it but then the power will run out and as speed declines, the more dangerous it becomes ...
Agree with corded 8+inch chain saw and my old cheap one from Home Depot on a pole is the bomb. Can get on Amazon as well.
Older now, found really good deals on guys that come do it and can reach what now is out of reach for me, even on the roof (+ER costs) + they lower cutting to ground, whereas mine all fell to make damages. Tipping could be cold beer if end of day, just saying. These guys are found everywhere, NextDoor.com, BBB, this forum, Google, etc.
Ten words or less ... a goal unattainable