What happens if somebody reports me to cops everyday? ?

If there isn't a legitimate reason, it won't take a week before THEY are arrested for filing false reports.

Maybe you should worry more about your legal problems instead of what happens when you're repeatedly reported to the cops.

the police will quickly stop paying attention to that person

You get arrested for having sex with a minor (which you have posted), for "loving" stuffed animals and questioned about your mental health status.  I think it's a matter of time until you are sectioned.

It depends.  If you are doing something illegal every day then you will probably get arrested.  If you aren't doing anything illegal, and the same person keeps calling the cops, eventually, they will first be told to stop, and if they continue, they could get charged with filing a false report.