Sudden increase in Bounce Rate - Change of Hosting and CF account

Hi,
Recently, I moved my site from A hosting to B hosting. I also changed my CF account as well. After setting up everything, both at hosting and CF, the site is working fine, but the Bounce rate is suddenly increased from 25-30 to 88-90. There is no change in the site address, URL structure or uploaded images path. everything is the same as the previous hosting.

After checking the CF firewall, many bots are accessing my site, which can be one of the reasons. Can I restrict any access to site outside CF? If yes, then How. I am on share hosting with Cpanel.

Thanks