I'm glad to be helpful. There is only one way to make money on such a coin. Wait until there is a listing on the exchange and try to sell the coin with a good profit. But the coin may not live to see the listing, so the miner will pay the electricity bill. It is already unprofitable to sell immediately, the profit has fallen.
Canxium seems to be doing okay.
https://safe.trade/trading/cauusdtI wonder if it will last or if will do like some of the other alt coins and disappear.
You can sell 50-80% of the mined coins and keep the rest if you wish. I do not believe in similar coins, but we do not invest in them, but try to get more profit from mining. When a coin appears on the exchange, the mining profit will drop to the standard values on other coins.