How do I fix overnight kernel panics on my 2019 iMac?

After having a number of apps crashing because of memory unavailability, I think I fixed that thanks to some members; it was likely due to Nord, even when shut down. Now I'm having computer crashes overnight, not sure if it's when it's going to sleep.

I have a 2TB SSD, but I'm concerned about the possibility of hardware failure (2019 iMac). Would love to get some suggestions. Etrecheck results below as well.

This is what I see:

panic(cpu 1 caller 0xffffff801753bb2a): Kernel trap at 0xffffff80174d3d59, type = 14=page fault, registers:

CR0: 0x000000008001003b, CR2: 0x0000000000000018, CR3: 0x000000002b3df000, CR4: 0x00000000003626e0

RAX: 0x0000000000000000, RBX: 0xffffff803b74f6b8, RCX: 0xffffff8031600000, RDX: 0x0000000000000000

RSP: 0xfffffffb00a1bb90, RBP: 0xfffffffb00a1bbf0, RSI: 0x0000000000000030, RDI: 0xffffff80313deeb0

R8: 0xffffff805e5c3f00, R9: 0xffffff805e5c3f04, R10: 0xffffff805e5c3f04, R11: 0xffffff8047989f00

R12: 0x00000000037970fc, R13: 0xffffff7f80000000, R14: 0xffffff805e5c3f00, R15: 0xffffff80313deeb0

RFL: 0x0000000000010217, RIP: 0xffffff80174d3d59, CS: 0x0000000000000008, SS: 0x0000000000000000

Fault CR2: 0x0000000000000018, Error code: 0x0000000000000000, Fault CPU: 0x1, PL: 1, VF: 5

Panicked task 0xffffff86b6d0b980: 260 threads: pid 0: kernel_task

Backtrace (CPU 1), panicked thread: 0xffffff904f2f6b30, Frame : Return Address

[Re-Titled by Moderator]

Original Title: Kernel panics occurring overnight