Some concerns

Hello fellow friends. Im a crypto enthusiast and have more experience on other blockchains. However i would like to learn more of ethereum.

To me it's concerning the gas prices, sometimes even reaching prices worth $80 for a transaction that is worth $5. I've heard the new updates and the change to Proof Of Stake will address this problem. Is it true? And how? Also, if i have another ERC-20 token, do i need to have Eth as well to pay gas?

Those are my two main questions/concerns. If you could help me clear this i would appriciate it. And dont get me wrong, i think Ethereum is a phenomenal/innovative platform. It's just that there are a few things that stop me from using it. Thanks in advance!