I notice that the latest version of Defraggler (2.22.995) by Piriform seems to be 30 July 2018. I used to use it regularly n my old laptop.
I did not install it on my new (Sept 2020) laptop as I wanted to "bed matters down'.
When I just use Windows C drive Properties Disk Clean the volumes seem minimal. That gives me some unease.

Should I reinstall Defraggler or can members suggest better alternatives?

Guidance please