Kernel Panic nvme

From the panic report I suspect the SSD is failing. Did you erase the physical drive when you reinstalled macOS? Since you have reinstalled macOS, the only other option you have available is to try a Secure Erase of the SSD as I mentioned previously. This is a long shot. Not all Apple SSDs have the Secure Erase feature built into the hardware.

To try a Secure Erase you can create a bootable Knoppix Linux USB drive using Etcher. Option Boot the Knoppix USB drive and select the orange icon labeled "EFI". You will need an external USB keyboard and mouse since Linux currently does not have the necessary drivers for the 2016+ built-in keyboard & trackpad. You also need to connect the laptop directly to your router with an Ethernet cable since we need to download & install the necessary software.

Once at the Knoppix desktop you need to launch a terminal (the black icon on the bottom left of the Taskbar). Press Shift + Ctrl + + (this is a three key combo and uses the actual plus key) to enlarge the terminal font so it is readable on the HD display.

Execute the following commands in order in the Terminal to update the software list and install the "nvme" utilities which can perform the Secure Erase.

sudo aptitude update

sudo aptitude install  nvme-cli

Issue the following command to Secure Erase the SSD. If it produces an error then try the second command. Double check you have entered the command correctly. That is a number one after the "-s" and also in "/dev/nvme0n1". There is also a zero in the "/dev/nvme0".

sudo  nvme format  -r  -s 1  /dev/nvme0

sudo  nvme format  -r  -s 1  /dev/nvme0n1

If the command still produces an error, then the Secure Erase feature is not implemented in your Apple SSD.

If you still have problems, then your only option would be to have Apple or an AASP to replace your SSD since there are no third party SSDs available for this model laptop.

Did you boot into Recovery Mode and run Disk Utility's First Aid on your drive? If so, did it discover any errors even if they were fixed?

You can try reinstalling macOS over top of itself from Recovery Mode which won't touch your data, however, if the APFS file system is bad or the SSD itself, then this won't help. You may need to boot into Internet Recovery Mode and erase the physical SSD (not the container or the volume) and re-install macOS.

If you don't have a backup of your data, then you really need to recover your files while they are still accessible. A physical SSD issue or even an issue with APFS may make the items very difficult to recover later.

You may want to take it to an Apple Store to be checked out regardless so you at least have an incident report on file. Also, an Apple Store has a lot more leeway to help out (with a free repair) than an independent service provider who has to follow a strict rules set out by Apple.

If you are not taking it to an Apple Store or Apple Authorized Service Provider then if it was my system, I would try to look at the SSD's SMART Attributes even as limited as they are with an Apple branded SSD. I would even use the hardware Secure Erase feature on the SSD to reset it to factory defaults, but only Linux has the necessary tools to perform the hardware based Secure Erase. I just recently resolved an issue with an Apple branded SSD using the hardware Secure Erase.

FYI, I believe your laptop model has about five different free repair programs available to it (SSD, Battery, Keyboard, Display backlight (aka Flexgate) and Display coating issue) so keep it in mind if any other issues crop up.