problem with comment link

I’m a novice. When creating my current theme, i create the theme from my Html file, instead of calling header, sidebar and footer.php I included all them in Index.php! and I copies the loop div in Index.php.
everything seems OK, BUT comment link is not working!!
I know that I missed the connection between comment and my blog! because I did not set anything for comments. Also I think there may be more problems that I don’t know yet!!
May someone please help me to solve the problem with “comment”.
my blog: https://www.safeincomesource.info/articles/
Thanks