Removal of hijacker programs

There is an effective method to deal with that issue, per Apple Community reply, here:

• Remove Search Marquis - Apple Community (answer) June 3 2022

//discussions.apple.com/thread/253939887?answerId=257398146022#257398146022

• Remove Search Marquis (2) - Apple Community

This method requires reading to understand & follow instructions.

Another maybe could work; try & use Malwarebytes for Mac (free)

• Download Malwarebytes for Mac (free & 14-day trial) w/ instruction

https://www.malwarebytes.com/mac-download

Clean My Mac can be removed following the makers advice from their website.

Search Marquis is usually got rid of with an app like Malwarebytes.

The only way you can get junkware CMM is by installing it. The other by being careful what you download and from where.