Hash rate
Hash rate is number of calculations the Bitcoin network can perform each second. It measures the network's computational power, representing the number of hashes being generated by miners per second. It's a measure of how fast the network is processing transactions and solving mathematical problems.
The number of miners affects the hash rate, as more miners join bitcoin network increasing the hash rate and fewer miners decreasing it.
A higher hash rate generally indicates a more secure and efficient network. Increase in hash rate will also increase mining cost including (mining facilities,electricity cost etc.) and miners financial difficulties if bitcoin price cannot increase.
As we can see hash rate is on the peak in below image,
