Your squat is okay for now. Your top priority for improving it should be to learn deep breathing and how to brace. Learning to do that while under load will help you in the long run as opposed to putting weight onto the bar as quickly as possible. It should be a balance between adding weight and keeping the muscles under tension so that they are actually getting trained. If you aren't sure whether that muscle group is loaded, it probably isn't - so learn to develop the mind muscle connection with those muscle groups.
When arching for the bench, make sure to focus on arching the upper spine to get the upper erectors tight. If necessary, try some t-spine extension stretches where you arch while also flexing your upper erectors to warm them up. The upper back arch helps with getting everything else tight. It looks like you're over tucking your elbows when benching - you really just need to externally rotate your elbows, not necessarily bringing the elbows right next to your side. There should be a balance between tucking and flaring your elbows so that you can get the lats, chest and delts involved. Try the 'bend the bar into an upside down U' cue to engage your lats while also flaring your elbows to get your side delts tight. This combined should help with stabilizing your elbows. You should be able to tuck and flare at the same time while keeping your elbows in-line with your wrists and the bar. This is something I'm currently working on so I might be wrong.
I haven't trained much cleans, but it looks like you won't get much out of them if you keep doing it that way. IMO, you would benefit more by ditching the cleans in place for front squats for now. The front squats don't have to be very heavy but more for practice so that you learn to keep your hips close to the bar and learn to keep your hips engaged throughout the lift. If you watch strong oly lifters clean, they have a lot more forward knee travel underneath the bar so that they can get their hips close to the bar as they're extending their hips. This allows the most efficient force transfer from the legs, hips and torso to the bar. Get a coach to help you or watch a ton of videos and technique tutorials if you want to keep the cleans. Another good idea would be to start off with hang snatches and check out Christian Thibaudeau's coaching forum.
Do a lot of pullups/chins, wide grip rows, upright rows/snatch variations, and overhead pressing work. Building all of the muscle groups in the back will help with building technique.
Edit: I meant hang cleans and hang clean high pulls, not hang snatches. Hang snatch high pulls would also be a good option.