Squat form recheck 85kg

[LaZer]

Hi,

Been trying to fix my hip drive, to remove 'squishiness', and to fix my lower back position when I'm standing. Unfortunately, squat shoes and a belt are not possibilities for me until the end of summer (some suggested that I get them) but I'm using my outdoor shoes which a flatter base than my running shoes and it is a bit more comfortable. I find that I have a bit of discomfort in my lower back after squat, is this normal?

Thanks for the help.

https://www.youtube.com/watch?v=dQp3WGQS05U

[LaZer]

Would really appreciate any input. I'm going to the gym tomorrow and I'd like to try improve on things. Sorry for bumping only after a day, just don't want to repeat same mistakes. Thanks!

[Michael V]

It does seem like you're driving harder with the flat shoes. But can you tighten up/straighten up a bit when you're standing? You're all over the place. Maybe that wiggling is contributing to your back discomfort.