I use Ccleaner Home use (free) and have done since it was invented. My computer (4 gig) starts grinding to standstill after using FaceBook etc., - just gawping at a load of pictures. Ccleaner just strips out cookies and leaves in the ones you save. It does lots of other stuff. Takes about 30 seconds to run it. Could not do without it.
I have an SSD divided into C: and D: with a WD Black for E: and F: The SSD made a lot of difference. I've saved E: for a new operating system should I want to take my SSD out .
My computer, (bought the motherboard used 10 years ago. i5 ) I'm troubled with it rebooting while Skyping and on certain YTubes. It takes a long time to reload, and seems to involve Skype. (that finishes on May 5th) However, the YTube thing leaves me thinking it's not all down to skype. A driving instruction Tube always fails at a given point. Odd. Too old to buy new stuff as the Memory is of a type that would have to be thrown away because I only have two slots and the replacements are some exotic type that cost a fortune. In the meantime, my pal goes to a house 100 yards away and buys a fast i7 that runs at a zillion Htz - all for 70 quid.
I used to enjoy computers but I just can't be bothered with anything that makes my brain hurt these days.