I am trying to debug my code because some weird things happen and I can’t really understand what’s going on and I need to go frame by frame or even system update by system update and check Entity debugger, but the thing is Rider breakpoints completly freeze editor. So how should I debug my code?
Jetbrains is working on exactly what you are waiting for 
Introducing Pausepoints for Unity in Rider 2020.2 | The .NET Tools Blog
Still doesn’t solve the core issue… It won’t freeze the editor, but you won’t be able to inspect values either, so it is just a fancy Debug.Break() (https://docs.unity3d.com/ScriptReference/Debug.Break.html).
yeah… and another point about this is to find a easy way to find infinity loops in the code…
Why wouldn’t you be able to inspect values?
Because it says so in the post you linked to: 
Yeah but you can use a normal breakpoint to freeze the editor and use the Rider debugger or use a pause point and use the Unity inspector. You just can’t do both at the same time.
And here we go back to the opening topic, I just pointed that the feature that you linked has nothing to do with what @Zylkowski_a asked for.