OK, I doubt level 3 will ever be a hotbed in C Bell or East Stand.
Atmosphere depends on having enough people who are like minded with the will to be part of a communal experience and wanting to be part of something bigger.
It needs also some level of organising, by both the club and the fans. We don't have that.
Nothing to do with government restraints, or not drinking in the seats or stands.
As regards the point you made about reporting stuff, I sincerely hope you would report racist behaviour , I did.