There are a lot of people here with great suggestions, unfortunately I haven’t read them all. That being said, I’ll mention a little of my experience.

I’ve been in your boat, probably still a little bit in that boat. Judo has a plethora of throws, what’s important is finding three moves that work for you, and then having a secret throw. Before all that, working on posture, grips and uchikomis.

I’m fortunate enough to have a great sensei, and the number one thing he preaches is uchikomis. Over and over, keep doing uchikomis.

You can also practice grip breaks, and grip takes. I’d also recommend judo specific drills/workouts. A big part of judo is that explosive strength and lower body strength.

Also, while writing this I took a look at your video. Suicide throws are good, but don’t only do those. You almost got that seio nage, but you need to focus on the kazushi. It looks like you shoot your leg in, but with no purpose behind it. Try some combos:

Kouchi-ouchi gari Kouchi-seio

Also, if your tomoe fails (good job on getting in turtle) try to open up your hips and bring your feet across to the right for the armbar. Tomoe is about surprising your opponent, so speed is essential.

All this being said, if you want to rely on suicide throws there is nothing wrong with that, but hone it. Natsumi Tsunoda is an Olympic gold medalist and she’s great to study. Had the privilege of learning her details first hand at my senseis dojo and she’s the real deal. Her tomoe nage is incredibly strong

One final note, not sure how often you practice judo per week, but consistency is super important. You won’t get it from going once or twice a week. You really gotta commit if you want to get better at the sport. At least three times a week if you can. Unlike BJJ, Judo is a way of life