I can afford £300.
Main things I care about are speed and display.
Google pixel 6a, Its my phone and I absolutely love it, really good cam, I can play genshin impact on low settings and call of duty on high settings on it. Battery isn't that bad works well for me I plug it in once a day for an hour or so. Heating issues might happen at the start but after some time it adapts. Really suggest google pixel 6a