3 days ago I used the Ethereum chain again to send some tokens, the cost per transaction was less than $1, but as @vaysar says, the network can get congested at any time if it is used a lot again. If finally ETH 2.0 does not arrive until the end of 2022, the only solution we have is the hard fork that will be implemented in the chain next month. Soon we will have a definitive solution, a little more patience.