PUP.Optional.Wajam is the detection name for Wajam, a browser add-on marketed as a “social search.”
PUP Optional Amonetize is a bundler. They offer a method of creating revenue with software by bundling them with other software, usually other Potentially Unwanted Programs or adware that promise a pay per install fee.
Bundlers are usually installed by the user themself, but without realizing the consequences.
Malwarebytes removes PUP.Optional.Amonetize completely. There is no additional removal required.