Problem with creating a simple glossary/list of abbreviations

I need to make a List of Abbreviations and Acronyms for my thesis.

I am a beginner with LateX and I have tried numerous times to insert the glossary professionally but it just does not work. This is why I tried this simpler idea: Simple list of abbreviations manually

However, 1) how can I remove the dots 2) and also how can I italicize the bold abbreviations (and remove the bold function)?

Thank you for your help 🙂

usepackage{calc}
usepackage{lipsum}
makeatletter
newcommand{tocfill}{cleadershbox{$m@th mkern@dotsep mu . mkern@dotsep mu$}hfill}
makeatother
newcommand{abbrlabel}[1]{makebox[3cm][l]{textbf{#1} tocfill}}
newenvironment{abbreviations}{begin{list}{}{renewcommand{makelabel}{abbrlabel}%
        setlength{labelwidth}{3cm}setlength{leftmargin}{labelwidth+labelsep}%
                                              setlength{itemsep}{0pt}}}{end{list}}
begin{document}
noindentlipsum[1]
begin{abbreviations}
item[US] United States
item[EU] European Union
item[Gvmt] Government. lipsum[2]
end{abbreviations} 
lipsum[3]
end{document}

documentclass{article}
usepackage{glossaries}

newacronym{us}{US}{United States}
newacronym{eu}{EU}{European Union}
newacronym{gvmt}{Gvmt}{Government}

makeglossary
begin{document}
Actually use one or two acronyms in a first use of gls{us} and afirst use of gls{eu}.

Print the glossary, but only for used acronyms (so: gls{us} and gls{eu}).
printglossary
end{document}