Help! Where does a guy find shirts?

Okay, I'm old and I'm not into fashion forward or whatever they call the trendy styles. I want a quality casual long sleeve shirt, loose/relaxed or traditional fit and I want cotton.

I don't want L.L. Bean or Carhart... I have issues with both companies. I also don't want the crappola Walmart, Khols, etc sell.

I can't find them! Help!🤣