Today it is really hard to win his place in the market with such a simple exchange and easy promotion. It is full of competition. You have to find other ways, without MM your exchange remains without liquidity. By itself no trades will take place. Besides, you need a big team to do that and enforce it

This is totally true. With so many exchanges out there, the competition is tough.
But only few of them stand out - with decent volume, active trading, or relatively good number of traders.
But first and foremost, we need to check the legitimacy of the exchange.
Where is this legally registered in the first place? Are their legal docs in place already?