just take your time. it works fine on mine ally but i noticed the first start takes around a minute before the game showed up. maybe it's the same on yours
is it showing up in the taskmanager when you start it?
when starting the game the Rockstar launcher loads forever. When starting the launcher first, it loads up fast, but the game wont start from there either, but it says its running on steam. I have downloaded and deleted the game 3 times now🤣