The funny thing I've noticed about every single person who has ever proclaimed how great and useful these Mac cleaning/optimizing utilities are: They all say the same things, generally saying how great they are, and any perceived slow-downs are worth it, and things like "it has saved by behind so many times."
The thing is,
I don't use them and never have... and my behind has never needed saving. In nearly 35 years of using Macs, hundreds of them over that time, I've never installed an "Optimizing" or "Cleaning" app and I've never had an issue that those apps claim to prevent or fix.
What will save you most of the time is having a deeper understanding of how the macOS works, learning what types of apps tend to cause incompatibility issues and how to fix them, and which ones are likely virus/malware/adware carriers and just flat-out avoiding them.
All that being said, try running
EtreCheck - It will tell you what's installed and where, fix minor issues, clean minor things, but mostly it will give you a better idea of what's going on in your System.