can i have a gx.games link as my game? i use GameMaker studio 2 and I dont have a subscription.

I don't know gx.games, but why not.

Exporting an HTML game and uploading it on itch.io is the best way to have people actually play your game, but if that's not possible you may create a simple itch page and put there a link to your gx.games page.

gx.games is a website where you can post games made in gamemaker (you need a subsciption to export exe files)