Just a suggestion. You might want to look into getting a decent chair and foot support first. Something like a cushioned office chair, the more "executive" looking ones, where even the arm support is cushioned.
Sit at your current desktop with what you currently have, and write down all the measurements that feel comfortable to you. More important: floor-to-butt, butt-to-head, and butt-to-elbow, width of chair (space between elbows). Whatever chair you get, make sure your head and arms are supported. With that, you can look for a good office chair that fits your particular measurements.
The leg-foot support, if it doesn't exist for your measures, can easily be done with wood.
I had this stuff done, and nowadays I "lounge" on my desktop. I tried the handheld way, and ended up hating it. The couch makes me lean forward, my arms can't hold the device for long, and most of the games I play look too small on the screen.
It's not a game I ended up playing a lot, but during the pandemic one person I know gifted me a copy of Among Us, and kept insisting I play with him and his friends. I was reluctant at first because I've never had good experiences with multiplayer games, but I ended up having a great time. They were on Discord with mics, but I was text-only, and it was funny hearing them when I was the Impostor. When they all went to bed, I continued playing with some randoms for a few more hours, and also had a great time, some were sad when I decided to finally leave.