How to know if you have bad digital footprint, and how to get rid of it?

I’m not sure if my digital footprint is bad or not, I don’t watch nsfw stuff like porn or anything, I don’t comment anything on my social media accounts, so I don’t really know if I’m ok or not. I genuinely have no idea how to go about this :(

I just have a bunch of questions.

•What actions damage your digital footprint a lot?

•Do lesser known apps damage your footprint?

•How to protect your data or get it …

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