I mean you can make a different map for different route, for example map 1 has some walls that you cant build through. After all, i only suggested to make a builder/manager track game because like someone mentioned above, The core game is flawed.
Im not interested in chatting anymore so have a good day! 
Aight bye thanks for all the help
Hi! This game has a lot of potential. 
I think the earlier ideas such as creating towns to explore and spreading the word through friends would be good to consider.
I think you could implement smaller towns with npcs and quests to improve player engagement.
You can also add more obstacles to make riding the rails more difficult and engaging (rocks that the player has to move, the train breaks down and has to be fixed).
TL;DR
Overall, you shouldn’t give up on this game. Pushing yourself out of your comfort zone and trying things that may not work is what makes us better people and developers.
Hello! Sorry for the late response i thought no one would answer anymore. I don t think you re gonna read this but ty for the feedback.
Then i will try and make explorable towns and add some npcs that maybe give you a package to deliver or something, although i think its not so primary and it won t help retention as players don t even discover that that they leave before.