Mint is a good choice ! They have a decent help forum where you could ask for such help. Like this one for example. https://forums.linuxmint.com/viewtopic.php?t=228884 Feel free to give more details here too, maybe i, or someone else here could help you with your specific Mac problem.
If they are talking about changing search engine, this means they feel impacted by the change. The removal of the Free ad-supported tier. Very likely searching for a paid-search engine is necessary; otherwise, they would have just kept using MetaGer.