Yes Mint is a good choice for your migration. It has been put together in a way that makes it intuitive for a windows refugee. The menu layout has the “start” (mint) button bottom left with your apps in there.
The system apps are named obvious things like “software manager” and it has default apps installed to get you going.
Being derived from Ubuntu it is the best supported platform for commercial apps/games but with Ubuntu’s weird choices (snap etc) tidied up.
It’s the most recommended linux distro for beginners for a reason. It’s a solid reliable well thought out platform
https://en.m.wikipedia.org/wiki/Embrace,_extend,_and_extinguish
OP has a reasonable concern, Microsoft has had a troubling past history, and embrace extend extinguish hasn’t gone away, just look at the office file standards shenanigans.
It’s certainly the case that the purchase of github is intended to create a platform that has network effects (making it hard to leave).
Microsoft has proven many times that their participation in FOSS tends to come with a catch or an intent to subvert.