lotta variables there.... TB teams with FAT logos ie REALLY big file sizes will often crash games.
a) check the size of the files you're using to decorate your TB team... keep em under 512kb, buuuuttt really stretch it out to 512 as much as you can when you really need that hi resolution image... new TB teams have a 5mb limit, and no restrictions on how MANY logos you need, but i'm pretty sure that you should cap each file at around 500 k to be safe
b) hardwire your xbox/ps5. Don't shove a digital brick thru a funnel and try to play this game using your wireless connection... Too many variables... your phone, other computers, neighbors with a crappy router that'll have their signal bleed over yours a little... OLD routers. Just plug your gaming device directly into the router with an ethernet cord (ESPECIALLY WITH THIS game AND ESPECIALLY with TB teams... since using them in dynasty is linked to EA's need to grease xbox's palms ie ONLINE DYNASTY ONLY for TB teams.)
c) renistall 2026 and all your TB teams. The game ran infinitely better when i uninstalled and reinstalled the whole game and set it up after
Honestly, i'd do all that ^ in order, too... good luck