Severe loss streak. What to do?

Hello fellow tankers.

I've been playing since Aug 2011. I'm a slightly above average player, my peak wr was 53.74 and wn8 of around d 2000 back before I quit in 2013.
I came back in 2021 to a new engine and maps and had to re-learn almost everything.
I watch a lot of guides on YouTube and can easily maintain 2.8 wn8 and 60% wr on strong tanks like Borrat, Renegade and obj 252u.
I understand and can play well with bad tanks to about 55%wr.
All my stats were on the rise until these 2 weeks.
What is going on these 2 weeks? I am officially below 53% wr overall but my average damage and my wn8 are all on the rise.
My WR is directly inversely proportional to my stats.
It's not fun to lose at all!
I try the "play for fun" method, take a break method, try different tanks. All lose 6-7 games before 1 win. That's right! I'm at roughly 30% wins in the past 100 battles.
It's infuriating. I know it's me, I never blame the team. I know there is no rigging but I feel like I've been "marked" to lose!
I had 3k wn8 in the new Pkz68 and now down to 1800.
I do 2.4k avg damage and another 600 ish in spotting. That's 3 marks on the gun soon.
But the losses are tilting!
Anyone else had similar?
TLDR:
2 week loss streak despite average damage, spotting, careful play and different tank types.