Demotivated due to click fraud. How do I solve this?

[Daniella]

Over the last 2 weeks, our competitor has intensified their click fraud efforts. It's become very demotivating for us. We've lost thousands and have tried everything from closing feed only pmax to running shopping ads with audience targeting only as to not appear for users that are signed out. They're circumvented this by using proxies and VPNs on signed in accounts and resorted to doing the clicks manually vs using the click bot softwares as they did before. Has any one dealt with this before? How did you solve it? Thanks in advance.

For reference, yes we know it's click fraud and who is doing it. We monitor all site visitors and our invalid click rate is 50%+, but Google isn't catching all of it.