Get a something like a Motorola G53 for £140. It will do everything that you need.
For a better tool for emails, online shopping and youtube get a used, fully working, premium business laptop such as a Dell 7400 or HP 840 G6 for about £170.
For a better tool for taking photos get a used Canon on Nikon DSLR for whatever's left of your budget.
Bearing in mind how easily phones are lost, stolen, damaged, it makes no sense to spend more than £140 on one. Especially when you consider how good phones like the Motorola G53 at £140 is.
Phone companies are very good at marketing. And getting people to lust over the very highest specification phones.
It's down to you. You can make an emotional buying decision. Or a logical one.