To answer you in order:
1: Yes exactly trackmania is for me a game that does not work properly today' as said here: ( those for which I made this subject)
2: compared to fortnite, I have tested this game I have never had any problems with this game on in all these different categories .***Anecdote:
it is easy to understand the different problems in trackmania:
Launch Trackmania and try all options/possibilities of the game:
local game: Map, Replay, Hot seat ,Local etc..
Editor: Map ,replay ,painting ,tools etc..
Try each element and sub-element (button, gameplay, language,display ,import and export elements,server,manialink, audio,chat,paramettre,planet,editomap,mediatracker,mesh modeler,channels, ALL ) during 2-3 hours and you will see that the game is not finished.
I have already expressed in my last one the definition of a finite game on a personal basis, thank you for rereading me