Need help! Beggin you guys (and girls)!

I need help in my story mode, i’m lvl 9, and up to “A new direction” in my main story mission. It’s glitched and doesn’t work when i get to the objective, i’m supposed to “follow CUSTM-TP”. However, when i get there, he doesn’t talk/move/do anything and i read that i need to join someone else’s game as they’re on that mission in order to get passed it, need help please!!! Will even start with you from the beginning until you get to that part if you want!!!

Honestly why don’t you just start a new game? Ive had to restart games I was a lot farther into because of glitches