Simple advice: Create a Redotpay.com account and transfer your crypto to the Redotpay account. Spend like you are using any debit/credit card in Turkey. If you need cash, withdraw from any ATM that have USD cash-out option. You can exchange USD with enough Turkish Lira any time through an exchange office. This is the best possible way for a foreigner / tourist.

On the other hand, if you have a residency or work permit you can open a bank (or PAPARA; a payment provider) account and spend your Turkish Lira income with the debit card.

As a reminder, no one carries cash in these days because of the high inflation. If you want to eat out, it costs 500-600 TL which is at least 3 bills/banknotes. It's not a good idea to carry lots of paper in your wallet unless you do some illegal stuff.