Let me clarify first, I don't have any technical knowledge, but as per my research, I got some information regarding etherum's high fees. First, it depends on the demands of users and how much users are sending or transferring funds through the Ethereum network. Actually, because of the ethereum network, lots of new projects are being built on the networks and they are transferring through the network.
Well, you are right, heavy traffic may cause gas fee increase but we are in this situation for many years which is not normal anymore or this really be the thing now? Mr. Vitalik didn't take action to lower the fees, it seems like he also preferred for this situation to turn like this. And I really think that we don't need to out this hard, in fact, we have other options like BSC and Polygon platforms where we can save some fees. As I believe that there is no way to help it down coz even the developers do nothing about this.