How should I clean my computer’s junk, manually or with software?

I am getting slow response from my computer and I came to know it’s because of having so much junk files. Should I manually clean it or I should

I am getting slow response from my computer and I came to know it’s because of having so much junk files. Should I manually clean it or I should use any pc optimizer?

or:I am getting slow response from my computer and I came to know it\u2019s because of having so much junk files. Should I manually clean it or I should use any pc optimizer?


or:Start with software, I recommend using both 360 Total Security and CCleaner, both are free and work really good.

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