People living in the US have few choices because most crypto-exchanges outside US stopped serving people in the US.
Coinbase has a monopoly in the US market and as a result charges high transaction fee and reports transactions to regulators and agencies.
Unlike centralized exchanges like Coinbase decentralized exchanges / DEX do not go through KYC verification.
But, they are mostly based on Ethereum blockchain instances and do not offer non-Ethereum coins but derivatives of non-Ethereum coins - like for ex. wrapped BTC.