On many Linux systems, getting started with LaTeX is easiest with TeXstudio. First remove any existing old TeXstudio:

apt remove texstudio texstudio-data

Install latest TeXstudio that you downloaded

gdebi texstudio*amd64.deb

Popular packages used in general for LaTeX are obtained via apt install or similar:

• Biblatex: texlive-bibtex-extra
• XeTeX: texlive-xetex
• FontAwesome (for popular emoji and website icons): texlive-fonts-extra
• Science e.g. \usepackage{siunitx}: texlive-science

Related: LaTeX editor on Windows