first results on Google

That’s your first problem. Higher ranked results on Google are either ads or “reputable” organizations (corporations). Google isn’t there to help you, it’s to help them.

Does Foxit no longer have a free PDF editor? Apple computers have a built in PDF editor. I mean, it depends on what you mean by “editor” though. If you want to manipulate the elements of a PDF, that’s obviously an advanced function. Yeah. It’s called capitalism. womp womp.

You might find some useful tools here. It’s mostly a list of self-hosted tools but there’s some web tools there too. github.com/awesome-selfhosted/awesome-selfhosted?…

This might be helpful for what you’ve described www.photopea.com and you can try searching alternativeto.net for alternatives.

Generally, it just seems like you need to work on your skills to search the internet for what you need. AI is very helpful but not 100% reliable.