UPDATE:
Surprisingly managed to install Visual Studio Code with sudo snap install code --classic
but it crashes on execution! I'm still unable to install Telegram!
Journal log from the time of the installation:
3/9/21 9:26 PM sudo username : TTY=pts/1 ; PWD=/home/username ; USER=root ; COMMAND=/usr/bin/snap install telegram-desktop
3/9/21 9:26 PM sudo pam_unix(sudo:session): session opened for user root by (uid=1000)
3/9/21 9:26 PM snapd api.go:1079: Installing snap "telegram-desktop" revision unset
3/9/21 9:29 PM sudo pam_unix(sudo:auth): conversation failed
3/9/21 9:29 PM sudo pam_unix(sudo:auth): auth could not identify password for [username]
3/9/21 9:29 PM snapd handlers.go:437: Reported install problem for "telegram-desktop" as already-reported
3/9/21 9:29 PM sudo pam_unix(sudo:session): session closed for user root
Did a sudo usysconf run -f
then rebooted but the issue still persists...