Is there an uninstaller app that is recommended

First, you should never install third-party antivirus/security apps such as ESET. That being said, I have successfully used the free AppCleaner with Tahoe.

Part 1 of 2

Once this type of software are installed and embedded into the computer 

Start Over from Scratch 

Heavy Handed ? - Yes

Effective in removing the AV Software ? - Yes 

For Apple Silicon computer >> Use Disk Utility to erase a Mac with Apple silicon.

For Apple Intel computers >>   Use Disk Utility to erase an Intel-based Mac followed by How to reinstall macOS

Always make a Time Machine Backup  before  proceeding 

Emphasis on User Account Only

If going this route - I suggest Not using Startup Assist to migrate everything back.

This will probably Re-Introduce ( ESET ) back into the Operating System . 

Part 2 of 2

Windows-like viruses that self-replicate and affect macOS don’t exist because of the underlying UNIX Foundation and permission limitations.

The macOS operating system resides in a sealed and read-only volume that can’t be opened by users or third-party applications.

Mac app security enhancements are sufficient to protect computers from malware.

Adware and Malware can affect computers and are often downloaded from “shady” websites or developers who inject them into downloads.

Source: User tip from @Kurt Lang

What is malware? - Apple Community

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