Yeah, unfortunately, liquidity is similar trouble to me. Major p2p exchanges here only provide USDT listing. So, we can store USDC and convert it into USDT whenever we have to encash. What do you think?
If you are just a casual holder/trader, and you are able and willing to use Binance, that's an option. They have the only relatively liquid USDC/USDT market:
https://www.binance.com/en/trade/USDC_USDTNot enough liquidity for whales though, and US residents can't use Binance, so it's not really a scalable solution.