Reaper is very powerful and not expensive. When I bought it the first time, I believe it took more than three or four years before they changed the version and in the meantime there was a ton of updates for free. Developers’ base is huge and there are improvements very often. Unlikely Ableton Live (limit of 16 tracks), Reaper can use as much tracks as your hard disk can receive
There is a forum, maybe someone have a good recipe for track migration from Ableton to Reaper.
OK, I found something about moving tracks to and from Reaper.
UserGuide, p. 422: https://dlz.reaper.fm/userguide/ReaperUserGuide615d.pdf
Also, converting .als to .RPP: https://forum.cockos.com/showthread.php?t=234839
Maybe there is something else on the net.