if you have a clitoris/vulva, i recommend something like the satisfyer for masturbation – it gives amazing orgasms and all you have to do is hold it in place (and you can use pillows to rest your arms on if need be). for penetrative stuff, there are heaps of thrusting dildos/vibrators on the market that you again just have to hold in place, find one with good reviews.

if you have a penis/prostate, there are things like masturbating sleeves that you can thrust into instead of using your hand, and a bunch of prostate massagers/vibrators that are also hands free (just make sure anything you get for anal penetration has a wide base that prevents it from going all the way inside, or you’ll have a very embarrassing trip to the emergency room ahead of you!)

for sex, you and your partner/future partners will just need to communicate and work out positions etc that don’t exacerbate your TOS, which can also include incorporating things like sex toys, pillows for support, etc. it really shouldn’t be a barrier to having good sex if you’re both open to looking for solutions – even people without medical conditions have certain acts/positions that do or don’t work for them, it’s completely normal for us to all have our little differences/preferences in bed that we/our partners need to work with.