People simply lost interest in Bitcoin Cash after the "Hash Wars" of 2018. The blockchain became relatively unstable for a short period of time, forcing businesses to look for other alternatives. Constant forking of the BCH blockchain has led to the lost of credibility among people in the mainstream world. There are two variants of the BCH chain (mainly BSV and eCash) trading on the market today. They have taken a portion of BCH's market share, effectively undermining the parent cryptocurrency's position in market cap.
Nowadays it's all about "De-Fi" and NFTs, so any cryptocurrency able to provide smart contract features will surely gain the most attention in the mainstream world. BCH has a sidechain with smart contract functionality, but not many people are aware of it. The number of dApps on it (if any) is pretty small, so it's highly unlikely BCH will take off soon. If demand continues to sink deeper, I'm afraid BCH will fade into oblivion like the rest of the other "shitcoins" on the market. I wouldn't worry much about Bitcoin Cash as long as we have the original Bitcoin (BTC). Just my thoughts