@DeafMan1983, I downloaded Pinta from your “EDIT 2” link from your above post and then on Ubuntu 20.04 I executed commands:
chmod a+x Pinta
. /Pinta
and I’ve got error message:
/tmp/.mount_Pinta2GPOIa/MonoRuntime/bin/mono: symbol lookup error: /tmp/.mount_Pinta2GPOIa/MonoRuntime/bin/mono: undefined symbol: clock_getres, version GLIBC_2.2.5
Do I need anything else to do?