You need a means to monitor outbound connections. This is your current config's most serious weakness. I recommend BiniSoft's Windows Firewall Control. $10 Lifetime/un-limited installs.
Add some form of backup, preferably incremental. I suggest AOMEI Free as it will do everything you will need.
Consider encryption software if you will actually use it. VeraCrypt is open-source freeware and worth a look.
Maybe use CCleaner once in a while to tidy-up all the temp files.
Thanks for all the comments; i will consider all suggestions.
Shortly:
1) Enable UAC
2) CCleaner or similar software
3) BackUp / Cloud (100 GB OneDrive) or External Drive (i have one, but it is full)
@yigido sağ olun, hoş bulduk. VHS kasetlerinden kalan İngilizce işe yaramadığı için yıllardır Google çeviriyle idare ediyorum ve çok zorlanıyorum. Bir Türk görmek sevindirici.