There are 2 issues I see with your system. First is there is no evidence that you backup your computer. This is a problem, however the solution will not address what you wrote in about. However it does need to be addressed!! At the very minimum you should be using Time Machine ( Back up your Mac with Time Machine ) which requires an External Hard Disk which is not expensive. Not backing up is an almost 100% guarantee of lost info. For a External Hard Disk I'd recommend a OWC Mercury Elite Pro.
What I think may be the issue is the adware you have installed. I also see you have Malwarebytes installed and think that may get rid of the problem.
Finally, there are no viruses for Mac OS, you are getting malware confused with a virus, please study what the difference is. You have some malware installed (the adware), the good news is there are NO, ZERO, nada, viruses for Mac OS.