Thats exactly my go to setup right now but for different reasons, I struggled with doomscrolling no matter how much I’d dumb my phone down.

I’m using a Nokia 6300 4G for tethering/calls and a Thinkpad for everything else.

Before buying something new try to look up on secondhand marketplaces/craigslist.

I’ve snatched an Ergodox Ez with wristrests for a bit over 100 bucks because the previous owner could not get used to it :P

If you want to play older games you could go for a vega 8/10 Thinkpad, just copped a T495 with Ryzen 5 PRO 3500u for 125 euros