It looks like you are always pretty much extended and never compressed much. On a perfect front side bottom turn, your back hand should almost touch the water. This compression extension helps a lot to generate speed.

Sascha trust your peripheral vision. If you’re looking at the wave, you’ll see obstacles in time.

I know this French brand but did not try it: https://en.harnessmount.com/

It seems robust.

To turn, you’ll need to find the right sections on the wave. At the moment, you’re not looking even once at the wave. That would be the first next step, to twist your body in a way that allows you to look at the wave. Graham’s advice to get straighter will help for that.

In fact, looking at the wave should begin even before the takeoff, when you’re paddling to catch the wave.

You’re always going where you’re looking!

I’ll add to the previous answers that you must look at the wave while you’re paddling to catch it. Sure, with practice you’ll feel the right time to pop up, but if you’re not looking at the wave you cannot adjust your speed and positioning and that makes it more difficult to be at the right time and the right place.

Initially, I needed a surf coach to tell me which wave to choose and when to pop up. Surfing outside of the lessons, I catches way less waves. It will come with practice!

Maybe your phone is old and uses a version of Android that is not compatible with the last versions of the app and the last version compatible with your system is now obsolete.

It looks like you’re rushing your turns, with split-second bottoms turns that are way too fast to send you to the top of the wave. This wave is slow and you have plenty of time, so slow down and wait to be higher to transition to the top turn.

#4 is the worst 😭

Enjoying this swell from south-west of France. The waves are awesome here but we’re about to get a lot of wind too from now on.