256 GB internal storage isn't the largest on the market but should do fine for most people. With a 3 GHz octa core processor, you get a lot of hardware for your money.
From Amazon
ONEPLUS 10 Pro 5G 12GB RAM 256GB SIM Free Smartphone with Hasselblad Camera for 2nd Generation Smartphones - 2 Year Warranty - Volcanic Black
OnBuy
(Black) OnePlus 10 Pro Dual SIM | 256GB | 12GB RAM