You can gain some time by making a grip on the triceps of your opponent's choking arm (instead of using both hands to defend the hand). Also, in this case, you could have tried to put your left shoulder on the floor.
Discussion
def. pretty well versed in back escape techniques, getting back to the mat, hipping over the leg, etc, great advice, very rarely do I tap to less than expert level chokes tbh
the humbling factor here was I took this guy for granted and paid for it. he was only there for a moment but put all 210lbs into ripping the lapel 😂 straight beheading. he wanted it more and finally beat me. big respect