When we created the game, we thought first of all not about monetary interest, but about how to provide the game for free to a wide range of people. If, of course, people are interested in the game, then it will be possible to make a game for cryptocurrency.
Games on telegram aren't popular here, so it is difficult for you to market it here even if it is free. because at the beginning of its appearance, Telegram was already considered a scam field for crypto users. If I were you I will try to build the website like others, this is one way to build trust here. Even if your intentions are good, and have the output to create a real cryptocurrency game, but one thing you should know is, the people will play your game if it really makes them happy, not the fear to be loss.
You are right no one wants to play games on Telegram as it is notorious for scam activities. Most of us have Telegram but we won't entertain anyone unknown on that platform or participate in anything that is free. I think OP should take his platform on a self hosted website and then come up with an ANN page, it would certainly encourage forum members to indulge in his platform otherwise it would remain dormant for a long time.