Overall, you don’t look tight, everything is shaky. Get tight and stay tight.
You pretty much drop the bar onto your chest from the last few inches as it comes down, stay in control of the bar. Losing control = losing tightness, and you aren’t tight to begin with.
The way you unrack the bar is terrible. You need to be higher up on the bench, like with the bar over your nose/mouth area and pull the bar forward with your lats as you lift it off the hooks. A bad unrack will put you in a bad position and the rest of the lift won’t be good. Bryce Lewis has a video on self-unracking, look it up on youtube.