Thank you for the EtreCheck report. Your computer is suffering from Kernel Panics, unfortunately the toughest part about diagnosing what the cause(s) of KP's are is that they can be caused by hardware, software of both! Therefore, troubleshooting can be very time consuming and difficult.
However, the very first thing that needs to be addressed is there is ZERO evidence that you backup the computer which is shortsighted and a 100% guarantee you will lose data. At the very least you should be backing up the computer with Time Machine ( Back up your Mac with Time Machine ) . Backing up requires an external HD to backup to, NEVER EVER share your backup External Hard Disk with storing any data. This is very foolish as it puts the data at risk!! Many experienced users have redundant backups, why because a backup can fail too. Personally I use Time Machine and also create a clone using SuperDuper!, you can also use Carbon Copy Cloner which does the same thing as SuperDuper!. Finally some users have a false understanding of Cloud storage, particularly iCloud. iCloud and other Cloud based storage solutions are NOT repeat are NOT backup solutions!!!!!!!!!!!!
Once you have addressed the lack of backup issue then you can re-focus on your KP issue. DO NOT make the mistake of doing the KP troubleshooting first and then backing up, again that is a short sighted method and further adds additional risk of your losing data!
Regarding the KP problem, let's work on the software first. What a common cause of KPs caused by software is outdated software when running current versions of Mac OS. So if you migrated from another Mac ensure all of your third party apps are up-to-date. This may require paying for updates based on what third party apps you have installed.
I also noted you bought a MM with ONLY 256GB of storage, you likely did this to try to save money on storage. IMHO that was a big mistake if my hunch is correct. Yes, Apple's addition MM storage is expensive however you should have purchased a minimum of 1TB of storage based on your old Mac's storage needs or what the computer you upgraded from had. Buying a MM with inadequate storage is a recipe for problems for users that are not experts on how to set them up. I am hoping that is NOT your issue.
Next, as mentioned hardware can cause KPs. This is most commonly caused by a trouble peripheral connected to the computer. Examples are external drives (your Samsung SSD???), scanners, printers, External Hard Disk, hubs, docks etc.. The only method to troubleshoot these is a process of elimination until you find the problem. How to do that is unplug all of them and then operate the computer for a few days, if the KP's stop then you know its likely hardware. Then you add 1 peripheral at a time, run the computer for a few days until you find the peripheral that is causing the issue.
So lets leave it there for now and see how you do.
