Help with form to mail

https://github.com/puffywine/Fitness/blob/master/nutrition I have been trying to figure out how to send my form data to my email for a while now, and nothing I try seems to work. I have also tried switching to PHP, and I am still getting no emails. I am a beginner coder who is doing this for school, and help would be greatly appreciated! I just want to understand what I am doing wrong. https://old.reddit.com/r/webhosting/comments/fqm77b/newbie_looking_for_help/ Here is a reddit post I made with some. supplemental information as well