Give me tips on how to find them, or tell me what u do in rsg to find fortress

Just keep trying nether fortress are more rare so just keep trying

just get lucky

what i do is try to go east or west. I tend to find the fortress more when i go east or west. I also tend to give up on seeds that spawn me in a soul sand valley unless i have a good time because i don't like dealing with all the ghasts and skeletons. It may be frustrating going through alot of seeds and not getting a fortress but you'll eventually get a good nether spawn