Need help deciding on knitting needle set that isn't too expensive 🤔

I am not sure what would be a good set of knitting needles that are super expensive. I know I want to start off with straight single points, but that's it. I don't know what size or material I should get. It is cheaper to just buy them individually? I have done some knitting and really love it. I just don't know where to get needles.

EDIT: Thank you, everyone, for your advice and suggestions! Will definitely look into the things you guys suggested.