"Wagner is marching towards Moscow" is not true.

Russia's forces are not collapsing

A Ukrainian based war map from 30.06.2023.

https://liveuamap.com/

Freedom of Russia forces are not seizing Russian cities.

https://www.theguardian.com/world/2023/may/22/anti-kremlin-militia-freedom-of-russia-legion-overrun-russian-border-village-kozinka

https://www.euronews.com/2023/05/23/coming-back-home-anti-putin-russian-group-claims-responsibility-for-belgorod-attack

Those are the newest articles on the subject, and they are more than a month old. No reports of even attacks on, let alone "seizure of" Russian cities by "Freedom of Russia."

That took all of 2 minutes.