I completed my portfolio page. I'd be grateful if you could spend a minute and share your opinion on it

I somehow have managed to bring this page together but I’m fairly certain there are countless things which I totally must have missed.
For starters, the form doesn’t work and neither do the social media buttons. Also, I was hoping the navbar could highlight the section of the page which is currently on the screen, but my limited research for the solution to the issue tells me that the knowledge of JavaScript is a prerequisite for that. Furthermore, the page looks like a disaster on phone screen. I wrote the entire code without a single line of jQuery(which I was pretty eager to use, but couldn’t find where it could be employed) and perhaps that is one reason why the portfolio is still quite unpolished. All criticism would be highly beneficial to me.