You will have to convert your crypto to stablecoin in order to open a position for an ETF.
(Risk of your crypto gain in value but you won't profit from it)
Of you can use your crypto as a collateral to borrow a stablecoin to open a position for an ETF.
(Risk of your loan get margin called and your ETF position will be margin called)
How much are you looking to trade ? might have a solution for you.