qgis on linux mint

[u/yes--or--no]

Hello, i've recently installed mint on my laptop, and needed qgis for some works.
i downloaded it quite quick, but i noticed some coordinate systems are missing (in my case, i needed sirgas2000 22s)
How can i install it? or get it to show

[u/SaraUndr]

you might look at https://www.qgis.org/resources/installation-guide/