Why does my PC slow down over time even if I don’t install many new programs?

The reason why a computer slows down over time is typically as a result of junk files, old software and background processes that have accumulated. System clutters, cache, and temporary files can slow down performance unless they are regularly cleaned. Performing disk cleanup, uninstalling unused programs, and maintaining your operating system up-to-date is also a good idea. Malware or rogue processes may also slack things down and frequent scans are essential. To maintain a steady performance, it is also possible to control startup programs and to minimize visual effects.

read insights: https://devicefixes.com/blog/how-to-fix-a-slow-computer/