Buying small amount of btc to spend

Where is the best place to buy a small amount of btc without getting charged ridiculous fees.

Last time I bought something like £90 btc from binance and when I went to withdraw I only got about £40 or £50 after their fees, they still have £16 of btc which I can’t withdraw as the minimum amount for withdrawal is 0.001 btc.

Yeah I know, I know you’re not supposed to spend btc but keep it so it’s value goes up and you become rich, but I’m an idiot.