Since you haven't been replied to...keep your weight centered over your heels and arches for better quad and glute engagement. If you get a chance check out The Knees Over Toes Guy - Ben Patrick. Everything he says is spot on for all things knees. I hope this helps and I certainly am not trying to step on any toes with this reply!
Hi Viktor. I coach speed skating in Alberta. I did a Google Meet slideboard session with our skaters and used 2 of your videos for instruction and shared them. Would you mind if I posted my Google Meet Video to RU-vid with some of your content.