Oof, you're in a world of hurt with that phone's band support. Especially on T-Mobile which is majority 5G now.

4G supported bands B1, B2, B3, B4, B5, B7, B12, B17, B20, B66

T-Mobile has a sliver of band 12 in most markets, so that helps for indoor/low-band coverage. No band 71 support means you miss out on their nationwide 600MHz low band, however. No band 25, which means you can't use T-Satellite. No band 41, so you can't use T-Mobile's high speed data band (although in most markets it is all 5G now so you wouldn't be using it anyway.)

On T-Mobile you're using B2/B66/B12 in markets that still have LTE running on those bands, and it will continue to reduce as they shift further to 5G.

May want to start planning your next phone move now and/or return it if you still can.