World wont load, havent reached the limit, crashed alot before, now just wont load

my minecraft survival wont load anymore, im too nervous to check my creative in fear of losing it entirely too. every time i try to load my world it crashes, i have not reached the 2GB limit and i have a fair amount of space still on my switch. i have tried almost everything to fix it but nothing works anymore. i can go on the marketplace and all that but even then after a bit of time it crashes as well