Mining difficulty keeps increasing and to stay profitable you need to increase the capability of your miner, that's where Asic miners comes in, they are more powerful and faster.
Hashrate Sinks
to 8-Month Low—Golden Entry

Bitcoin’s hashrate has dropped to 684.48 EH/s—its lowest since October 2024—due to rising mining costs and energy-saving measures.
A 9.5% mining difficulty drop on June 29 could boost miner profitability and help restore network strength and participation.
Despite the hashrate dip, Bitcoin holds at $106,000, supported by ETF growth and resilience against stock market volatility.
https://beincrypto.com/bitcoin-hashrate-sinks-8-month-low/