First trackball and it works pretty well! I had to learn it which took about a week but now works great. Attached it to my chair and now just lean back and use my TV sometimes to do work 8)

I use my left thumb and made the bottom right button left click and the one next to it right click

Not at all! I never found a good use for the right thumb cluster so it's always been random things. Now it has a purpose 8) As I t more used to the custom keyboard I notice I use less and less keys 🔐🔐🔐 I recently made the switch to change the top row number keys to do other things and just use a layer switch for all my number and special character needs

Adjustable Cell Phone Stand for... https://www.amazon.com/dp/B08KDWXCK4?ref=ppx_pop_mob_ap_share

I got 2 of these and they work pretty well. I put Velcro on mine to hold it in a little better cuz I'm a heavy typer.

Thanks mate!