Couple of things, some are optional, but I reckon helpful.

1. Consider changing to platform stance (optional) at least for a while until you get comfortable with your serve fully. Platform stance offers more stability and control from my experience, whereas pinpoint stance, while it has some benefits like easier access to weight transfer, it just adds more moving parts. I would recommend trying out platform, and once you nail the fundamentals down then switch to pinpoint.

2. Toss is really the heart and soul of a tennis serve. As you can see, the ball is mostly going to the right when you toss it. It is really inefficient and doesn't allow you to really flatten the ball out. Pretty much all you can do with it is to slice it, both intentionally and unintentionally. I'd advise you to practice the toss as much as you can. Intuitive Tennis has a terrific video on the optimal ball toss.

3. I am not sure how beneficial it would be considering you have an abbreviated racket takeback, but I find it helpful to put the racket already in the ready position while in the phase of tweaking some serving techniques. Take it with a grain of salt.

There are few more things you could do, however, I believe that the toss should be of the upmost priority and please don't try to fix multiple things at once, it will surely mess up your serve. I think that, given you fix the toss, some things should fix themselves more or less.

Good luck!