As a guy who wants to look pretty, how and where do I find makeup?

When I went to some mall, my girlies took me to a makeup store and a worker started showing the shades for her and I didn’t really wanna say it’s for me so she said it’s for herself and we looked around. I’m really shy and scared kinda too tbh… I wanna start very small… probably a concealer only even cause I’m kinda insecure and if I do too much at once I’m gonna ruin myself.

I don’t know the first thing about makeup, please help.