After Performing Finder Operations, the Mouse Pointer Moves on its own/Programs Switch

Sorry to be so blunt, but what a mess...

You have a huge number of login items, launch agents, many of them apparently rather old, and you have this **** called "cleanmymac". This program is known to cripple systems by deleting files that should be left alone.

You can start by uninstalling cmm, per the developers' instructions, but really you should do a clean install.

It looks like this mac has been accumulating stuff for over a decade.

Fortunately, it is relatively easy to bring it back to a great shape.

1) Make a full backup, preferably two: a Time Machine, and a full bootable clone, on a separate drive. You can use the free version of SuperDuper! to make this clone.

2) Erase and install. I advise you to create an installer on a usb stick, to avoid having to install over the internet (slow).

Instructions here: How to create a bootable installer for macOS - Apple Supporthttps://support.apple.com/en-us/HT201372

3) Migrate ONLY the user accounts (NOT applications, NOT settings, or other files) from the backup you made in step 1.

4) Install any applications you really need.

Enjoy your clean, fast mac, working the way it is supposed to.

Oh, and NEVER let anything like "cleanmymac" near your mac again. Macs don't need "cleaners", they just need to be properly cared for.

The first thing I’d try is testing with a different mouse or trackpad. If things work correctly then it is likely a problem with the mouse driver. I am not familiar with logitech mice, but if they have their own driver maybe there is an update available.

Test to see if the problem also occurs in a different user account.

Then run Etrecheck from your normal account and post its report here,