Gas fee question

Hello, today I did my first “swap” on coinbase wallet. I used Ethereum to swap for a token, was about a $200 transaction. My question is they charged me a $16 gas fee. So say hypothetically this token I bought goes upwards to the hundreds of thousands of dollars in worth, and I want to swap back so I can sell and cash out. Does this mean my gas fee to swap would be thousands of dollars? How would I afford to ever sell/swap this token if it went to the moon.

Going forward, is there any way I can get a cheaper gas fee? Please let me know if there is another token I can use to make the transaction cheaper because these fees are very high.

Thank you so much for your advice and help with this matter it is greatly appreciated.