Simple yet more useful footnotes in LaTeX

footnote.tex

% Define macros to handle footnotes better
% Usage: \fnm will mark footnotes, and then \fnt{foobar} will populate footnote
%        with "foobar".
% Note:  \fnt{} order will evaluate in a 1-to-1 correspondence with ordering of
%        \fnm usage.
% Credit: https://tex.stackexchange.com/a/437538/121389

\newcounter{footnotemarknum}
\newcommand{\fnm}{\addtocounter{footnotemarknum}{1}\footnotemark{}}
\newcommand{\fnt}[1]{
  \addtocounter{footnote}{-\value{footnotemarknum}}
  \addtocounter{footnote}{1}
  \footnotetext{#1}
  \setcounter{footnotemarknum}{0}
}