Too many requests

Hello,

After noticing our server begin to work slower, i checked access log from few days ago until now. Out of arround 160000 requests, around 58000 were self ping similar to this:

168.***.***.*** - - [21/Dec/2022:00:00:05 +0000] "POST /?cleverreach_wc_controller=Async_Process&action=run&guid=332610_63a24c85a00bd8.24425234 HTTP/1.0" 200 12314 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36"

I also noticed it on another site that is basicly clone of first without any visits – it also had only ‘/?cleverreach_wc_controller’ requests from itself – basicaly 37000 in 2 days. Plus 10000 wp-cron (probably related, as i said no traffic at all, total around 47000 requests. example: https://prnt.sc/JaAOCm6ZhVcf

Is there solution for this, as it really stresses our servers?

Thanks, regards