As usual for these questions, the only way to know is to contact the author. Everyone has a different version of what is commercial use or not.

You should tell us which fonts you're talking about. Otherwise it will be difficult to help you.

As usual this is the best advice and you should follow it.

Why would you want to delete your post? It could help other people.

Emails are sent when there are technical issues that prevent a font from being uploaded. In your situation, the characters are inconsistent in terms of weight. There is also no kerning or spacing in your font. The characters are not aligned properly on the baseline. If you can fix these issues, you can feel free to submit it for review once again.

"Mais"

Il y a de fortes chances que ce ne soit pas une "police" mais tu peux trouver de nombreuses polices similaires ici.

You should post a picture here: https://www.dafont.com/forum/post.php?f=1

S'il s'agit juste des accents, elle est a priori disponible avec ceux-ci : https://wildpicks.design/product/fibre-extended-brush-font/

Maybe you can find something interesting here: https://mksd.jp/designfont.html

Well the problem is that the spacing and kerning need a lot of improvement unfortunately. Kerning classes are also not used properly. I would recommend dropping the kerning classes in your situation - or only putting similar shaped letters together - and reading more about the spacing/kerning issue here: http://designwithfontforge.com/en-US/Spacing_Metrics_and_Kerning.html

"WB"

"JACKSON"

Hi, it seems like there was a small mistake when uploading it. I changed its name now. Is this the correct name now?

There was indeed a font like this on Dafont but it was removed due to being a copy of the original font that is linked above.