One other thing should be mentioned about your sumo deadlift.
You’re performing the sumo deadlift as if it were just a wide stance conventional deadlift. I’m not particularly good at sumo, but I know what it’s supposed to look like. Sumo is done to take advantage of different points of leverage than a conventional. It’s not just ‘get your feet outside of your hands and do a deadlift’. It should be very uncomfortable at the set up. Your torso should be more vertical. Your hips need to be more open. Watch some videos on it to really learn it. The best sumo deadlifter who comes to mind who also produces great instructional videos is Chris Duffin. Watch and read anything by him. You can also search Kabuki Warrior to find his content. All of this is assuming you want to actually deadlift sumo, lol. I do think it’s worth a shot, just to see how it suits you.