You can do both actually! Use quppy wallet (availbale both in App Store and Play market) for secure storing your crypto and withdrawing it to fiat once needed. Wallet offers you an opportunity of opening an account in EU bank with personal IBAN. This way you can easily fix the profit and buy back cheaper of needed within a wallet
Fixing profits while market is just starting its growth?? Huh Definitely not the best idea!
As for Quppy - in which bank will I be able to open the account? Or it is the some kind of virtual bank account? Debit cards available?