Your after-market SSD is not doing its job:
Performance:
System Load: 3.47 (1 min ago) 3.52 (5 min ago) 3.46 (15 min ago)
Nominal I/O usage: 4.44 MB/s
File system: 20.21 seconds
Write speed: 34 MB/s ⚠️
Read speed: 474 MB/s
Both speeds should be nearly equal at ±500MB/sec. Fortunately I think I see the reason and it is fixable:
Drives:
disk0 - Samsung SSD 860 EVO 500GB 500.11 GB (Solid State - TRIM: No)
When I upgraded to SSD in a Macbook Pro, its maker said TRIMforce was not required. However, after a few years the Write speeds dropped to half, then plummeted into the two-digit range. I fixed it by enabling TRIMforce:
https://eshop.macsales.com/blog/31619-how-to-execute-trimforce-command-with-your-owc-ssd/
and did MULTIPLE Safe Mode boots. I had to leave the computer "soaking" in Safe Mode for up to two hours multiple times to allow Safe Mode to do the needed maintenance but, once it was done, my SSD speeds were once again snappy and have remained so.
I'd start there.
And PLEASE! rid yourself of every bit of that useless "cleaning" dungware! It's all a scam. Catlike, the macOS has been self-maintaining for over 20 years. That third-party cr@p only interferes with elegant self-maintenance routines that you paid Apple to build into the OS. Let your Mac be a Mac!