I've got a machine at home that I've been messing around with, changing config files, force-installing various applications, removing stuff, etc... since 1990, and now a bunch of stuff isn't working right. You tell me what's wrong with that computer, and we can tell you what's wrong with yours.
In Other Words: You really haven't supplied very much actual detail regarding your problem(s). Unless you type a command, click a button, or perform an action that prompts Linux Mint to actually respond with "This isn't working right", then that phrase doesn't really belong in your problem description.
What does belong there is a recitation of what you tried (be as specific as possible) and what (specifically) happened (or didn't happen) as a result.
Saying "It wasn't working right, so I tried a bunch of stuff, then a bunch more stuff that my cousin suggested, and it's still not working right. What's wrong?"
is neither a problem description, nor a question that can be given a serious answer.