First, Welcome!
You asked for criticism, so here it is. I watched all 3 videos, but on the first video I stopped framed a lot. I recommend you do the same. On the break you have way too long of a bridge. Too difficult to control. Use center or 1/2 tip above center and hit the one square on the nose. On the 1 ball your cue is not level and you have no follow-thru. 2nd shot- you approach the line of aim from the side ( might have to do to the room size), cue not level, and you jump up. 3rd shot- slide into line of aim, causing crooked follow-thru, body moves before cueball even hits the 3. 4th shot- not too shabby. 5th- 9th- improper approach to the shot, NO warmup strokes, jumping up. Other- elbow tends to drop, I didn't prefer your pattern on the 5 to the 6 to the 7, but it did work.
Overall, very good shotmaking, you obviously like to play fast and loose- not always a bad thing, but it will cost you games in the long run. Your mechanics really need work. They will get you thru in the tough and tired times. Work some on your position and pattern play. Play some 14.1- that will really help in that area. Hope this helped some.