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Ok, thanks, I'll wait because i don't understand how to fix the problem.

Thanks for the welcome! And sorry if I didn't post the code right away.
The code that returns me the best result is the following one:

% \usepackage{makecell}
% \usepackage{graphicx}
% \usepackage{multirow}


\begin{table}[H]
\centering
\caption{cap}
\resizebox{\linewidth}{!}{%
\begin{tabular}{|c ...

Hi to everyone,
I have to make a table as in the png example below. Sincerly, i tried in many ways and with some online converter but i can't find a feasible solution.
Is there anyone who can help me, please?