I haven't looked up phones in the ~300$ with these very important features in mind but I did look up phones in the 300-350$ price range with other very important features in mind (camera, screen, and battery) a couple of days ago, might wanna check them out:
- Oppo Realme 11 Pro+ (370$ in my country for the 512GB/12GB model) 2+3 update policy
- Xiaomi Poco F5 (345$ for the 256/12) same update policy
- Xiaomi Redmi Note 12 pro+ (320$ 256/8 don't know about the update policy of this one)
Also please use a screen protector and a case regardless of how durable the phone is, replacing a damaged case or screen protector is much cheaper and easier than a broken screen or phone
Good forum but everything is safe there so OP should pay good attention