Etherum fees

Hi everyone, so recently I’ve decided to read up about crypto currency and after not much deliberation yeeted my savings into ethereum, it’s holding steady at the minute but then went into the nft world (which wouldn’t be as terrible as everyone makes out if it weren’t for the gas fees). Are gas fees ever likely to change? Ethereum seems to be the most commonly used coin despite these fees, why doesn’t everyone just use a different coin with lower fees? Ethereum seems like a great investment when I read about it!

Sorry if these questions have been asked before.