Here are a few suggestions to clean-up your digital footprint:
Redact can delete all your posts and/or comments on social networks such as facebook, instagram, twitter, linkedin and more… it can be very usefull especially on these ephemeral and instantaneous platforms.
You can preview what will be deleted and select what you don’t want to delete.
Do you think it is usefull to keep your posts and comments older than 2 years? if your answer is no, just click here:
https://redact.dev/
Justdeleteme gives you the shortcut to the place where you can delete your account on the most popular website like GAFAM+ adobe, avast…
https://backgroundchecks.org/justdeleteme/
Incogni does the job for you but it’s obviously not free, you can find some coupons on internet to reduce the price
https://incogni.com/
this page where you can check if Facebook has your mobile/landline phone number or email address - and if so then request it to be deleted from everywhere. (Thanks to @leledavid )
If anyone knows other clean-up tools, do not hesitate to mention them in comments, I will edit this post. Thanks