"site" results fluctuation

This thing is driving me crazy..
Site made last month (copied content, spun and double translated).. in 18 days.. I got 5.200 pages indexed in GSC and another 4.400 "discovered but not indexed".
Did my site: searches and everything was looking great.. I was finding 5190 results..

Since the 29th .. everything changed.. (first noticed it in my ad network)
From some 1800 daily impressions (GSC performance tab) I drop to 22 and site: search results continuously fluctuate on hourly basis and steadily descend.
From 5200 to 3800.. back up to 4600, then down to 3600 .. up again to 5020.. down to 3200... up down, up down.. today I'm at 2320..So I've steadily lost a couple of thousand pages.

Today's 300 page drop coincides with about 300 pages indexed on GSC (reached 5504 indeexed)

Can anyone advise cause I really can't find wtf is going on !?!

note: don't know if its significant.. but I'm using the rank math indexing plugin and a python script to notify the api

If you spin and post so much of content in 18 days, Google is not going to give you steady growth. You will continue to see such results most of the time.

sarfrazk9 said:

If you spin and post so much of content in 18 days, Google is not going to give you steady growth. You will continue to see such results most of the time.

Click to expand...

I originally posted in the thousands for the first 2 weeks.. Now (by now I mean before this took place) my posting is limited to 1-2 posts a day, just to notify for site updates and hopefully get re-crawled

today its down to 1900 results