There was no chance that Twitter (who already had periscope) would accept a $4B+ deal to buy Clubhouse.
In fact, it was very predictable as I said here before the acquisition talks that Twitter would push on with using Spaces instead of buying Clubhouse. [0]
The hard truth was that Clubhouse launched too slowly and even Twitter Spaces launched faster than Clubhouse to release their Android app. [1]
The invite system, slow release of the Android app caused them to lose steam to Twitter and Discord during the social audio race of 2021 at the time. [2]
[0] https://news.ycombinator.com/item?id=26044382