As of the 25th, the mining cost of Bitcoin is around 86k

This is due to the rise in Bitcoin prices and equipment upgrades

For example, while others are using graphics cards for mining, you are using a 486 to mine, the result is that 99.99% will definitely be mined by others

And all the costs you incur will be calculated into Bitcoin

In other words, this is due to the competition; the cost of mining one block of Bitcoin is 49k, but because some people want to mine more, they use double the cost to mine, the rewards remain unchanged, but the cost increases, which is the same principle

In simple terms, Bitcoin mining is like answering questions with computing power; whoever answers correctly first gets the Bitcoin reward.