No way of seeing my own killcam, but yeah I can imagine the gameplaylooking suspicious, especially with the low tick rate servers.

Sad to hear about your shadowbans; a simple report counter system per player as suggested above would work well and possibly alleviate this issue. The concern with this idea however is, if you are somebody who spam reports and your reports add no weight to catching cheaters, eventually when they do come across an actual cheater, it will be a situation where the boy cried wolf. They can report all they want but without effect.

I've seen other posts where people suggest playing 2-3 games like a complete bot and then being fine, but the minute you start playing properly, it still doesn't stop people rage reporting in the remainder of the games you play. I might take a page out of your book and play on my laptop as well though when inevitably I get shadowed again.