I’ve been using fedora but I would like to try something new and I think about arch linux but I don’t know if it’s good for gaming. What do you think?
As a few others have said, most distributions are good for gaming. Arch, being a distribution that requires lots of manual configuration, requires some setup for the best performance.
Read these two articles throughly and use the tweaks that apply to your system/needs.
Straight from the Arch Wiki:
Gaming (section 7 and section 9 are especially useful).