MacCleaners

Stop looking. No Anti-Virus software or so-called “cleaning” apps are needed or recommended for Mac OS. They can conflict with Mac's own built-in security. At best they will slow your Mac by using unnecessary resources and at worst will bork your entire system.

If you suspect you may have adware then run Malwarebytes. Malwarebytes was developed by one of our own colleagues here in ASC and is about the most proven anti-malware software for Mac.

If you want to get snapshot of your operating system to see if you have any orphaned files that could be deleted then run Etrecheck  It is a diagnostic tool that's very useful to us in finding problems. Also it will give us further specs on your Mac. After it runs post the log file here. It will contain no personal information.

To post the log file click on share report and use the Page icon in your reply window. See video:

https://discussions.apple.com/docs/DOC-250000211

These are the only two third party apps most folks here will recommend.

In addition to macjack's pertinent comments, read Effective defenses against malware and ot… - Apple Community for some additional advice.

How to clean your Apple products - Apple Support