20,1 iMac randomly does a black screen crash, about 30 secs it turns fans on extreme full blast for about 10 seconds then restarts.

First, Spotlight is running hard at 900% CPU cycles which is unusual. Could be due to CMM or a file system issue perhaps.

More worrisome is the "ProxiedDevice-Bridge" panics which are associated with the T2 security chip and the "CPU CATERR" panic. These two panics usually indicate a hardware issue with the Logic Board. In my personal experience the Logic Boards on the 2020 iMacs have a much higher rate of failure than any other. You can try a DFU firmware Revive to see if that does anything for those "ProxiedDevice-Bridge" panics. Unfortunately these types of errors hardly ever show up in the Apple Diagnostic results.

FYI, I'm not sure what that Memory Clean app does, but I would not think you should need it.

I hope you have good backups since there is usually no way to recover data from these newer Macs.

You've installed what many of the experienced contributors consider to be akin to malware: CleanMyMac.

First, there is no reason to ever install or run any 3rd party "cleaning", "optimizing", "speed-up", anti-virus, VPN or security apps on your Mac.  This documents describe what you need to know and do in order to protect your Mac: Effective defenses against malware and other threats - Apple Community and Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support.  

There are no known viruses, i.e. self propagating, for Macs.  There are, however, adware and malware which require the user to install although unwittingly most of the time thru sneaky links, etc.   

Anti Virus developers try to group all types as viruses into their ad campaigns of fear.  They do a poor job of the detecting and isolating the adware and malware.  Since there are no viruses these apps use up a lot of system resources searching for what is non-existent and adversely affect system and app performance.

There is one app, Malwarebytes, which was developed by a long time contributor to these forums and a highly respected member of the computer security community, that is designed solely to seek out adware and known malware and remove it.  The free version is more than adequate for most users.  

Unless you're using a true VPN tunnel, such as between you and your employer's, school's or bank's servers, they provide false security from a privacy standpoint.  Read these two articles: Public VPN's are anything but private, Former Malware Distributor Kape Technologies Now Owns a Number of Public VPNs and a Collection of VPN “Review” Websites and Security Risks: The Dangers of Using Free VPNs (eccu.edu)

That being said I recommend you uninstall CleanMyMac, ProtonVPN and Memory Clean according to the developer's instructions.

You can check to see if you've removed all of the supporting files by downloading and running the shareware app Find Any File to search for any files with the application's or the developer's name in the file name.  For the software mentioned you'd do the following search(es): 

1 - Name contains cleanmymac

2 - Name contains macpaw

3 - Name contains protonvpn

4 - Name contains memoryclean

Any files that are found can be dragged from the search results window to the Desktop or Trash bin in the Dock for deletion.

FAF can search areas that Spotlight can't like invisible folders, system folders and packages.  

If you get warnings that the file can't be deleted because it is in use or used by another app boot into Safe Mode according to How to use safe mode on your Mac and delete from there.

Note:  if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode.  This makes it act as a wired keyboard as will assure a successful boot into Safe Mode.

Hi,

Sigh of ADP000 means you don't have hardware issue, though it could be possible you would have hardware trouble. You'd better take or send your iMac to your local retail Apple Store, Genius Bar or Apple Authorized Service Provider to be examined your iMac there.

Genius Bar Reservation and Apple Support Options - Apple

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