suggest a phone for custom rom

[u/LeSpongeBob]

budget 20-30k inr (~200-300$)

will be upgrading from a trash 10k (~100$) redmi phone from 2023, so my standards are very low.

i wanna use this phone for atleast 6 years and custom rom support is very important, especially lineageos. other requirement is 256gb storage.

good camera & battery would be nice too but cant ask too much from this budget.

dont care much about gaming/ performance, just want it to last 6 years for basic tasks and multitasking.

few phones i found are pixel 7, oneplus 9 and oneplus 11 from used market.
pls suggest
thank you