Should I Wipe my PC?

I am Running Windows 10 for those wandering and have been using Microsoft defender for about 5 Years Recently I have switched to malware bytes and the first scan I had it had like 20 detection's but from what I have seen and heard that is normal for malware bytes. now COD is big alright so don't judge but I had about 10gigs free on my 1tb drive last night today when I has using kindle I got a low space warning and I had 500 mbs free what the hell had just happened was above me and at 4pm today (I got the alert for low space at about 10 AM) I magically got 8gbs back so I did a malware bytes scan and got nothing on my main drive (the one that magically lost 10 gigs) and one on my D drive (Its a 8tb drive) I quarantined it and I am running a second scan and I am also gonna do a scan on Microsoft defender
but I have heard most people just wipe there PC's after like one malware detection so what should I do?
as said I have had this PC for about 5 years and I don't really want to wipe it

Thanks In Advance

Same Day now its 8pm I have 9 gigs now I have no idea what is going on

next day back to 8gigs again

planing on switching to bit defender or eset thoughts?