Completely new to speedrun here if I don’t have livesplit how exactly would I do a RTA run or is that not possible

If you don't have a timer you could use a timer on your phone to get an estimate on what the time is and when you submit the run the time will be double checked by the mods of the game you're submitting too

If you want to use a timer you can use Livesplit and you can download Livesplit here: https://livesplit.org/ I personally like this video for helping set up Livesplit

Okay thank you I’m guessing livesplit don’t have a iPhone app yet also is FramePerfect a good app to use or is it bad