Macbook Pro Do I need Trend Micro anti virus for macOS

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.

You do not need any third party anti virus app. These apps use system resources while providing no benefit. They may cause harm to your system.

Read this article: Effective defenses against malware and ot… - Apple Community

 Malwarebytes is about the only program of it's kind that is safe. Malwarebytes was developed by one of our own colleagues here in ASC and is about the most proven anti-malware software for Mac. It's even recommended by Apple techs for clearing out adware, etc. if you happen to get it.

However even Malwarebytes will use unnecessary resources if you use it in continual scan mode. IMO it's best to download the free version if you suspect malware has gotten onto your Mac.

For a more in depth explanation of protecting yourself from malware see this post:

Effective defenses against malware and ot… - Apple Community