Is it possible to create an updated version of Bitcoin free from so many technical problems/bottlenecks that appeared or were revealed after many years of using it (and using it very intensively in the last few years)?

It seems that the original idea put forward Satoshi Nakamoto has been stretched to it's limits, problems pile up and some of them don't have long term solutions.

Did anyone come up with a Bitcoin revamp that is free of those?

I'm not talking about a significantly different cryptos like Etherium, rather about modifying/adapting the original idea.

Or does Bitcoin have some inherent flaws that will eventually inhibit its growth?