By far the easiest way to cause instability and crashing is to install ANY third-party speeder-uppers, Cleaners, Optimizers, or Virus scanners. or a VPN that you installed yourself.
The idea that a third party, with no special knowledge of the inner workings of MacOS, can somehow find a simple way to protect your computer — that is not already being done by MacOS itself — suggests that the MacOS developers are somehow "holding out on you". That is absurd.
You should remove any and all (other than Apple built-in) virus scanners, speeder uppers, optimizers, cleaners, App deleters or VPN packages you installed yourself, or anything of that ilk.
Your report shows Bit Defender and Nord VPN. Remove them and NEVER re-install.
Third-party file Sync-ers such as DropBox, BackBlaze, OneDrive, or GoogleDrive can ruin performance, but are not inherently dangerous.
The current versions of MacOS have protections so good, there are currently no known Viruses that can SPONTANEOUSLY infect your Mac. Random ‘stuff’ is NEVER allowed to be Executed, so all your files do not need to be scanned, again and again. Only software from know developers is allowed to be considered for becoming Executable, and then only after you enter your Admin password to allow installation. Potentially-executable files are then scanned at first run by MacOS Gatekeeper, locked, and moved to the /Applications folder.
Effective defenses against malware and ot… - Apple Community
Effective defenses against malware and ot… - Apple Community