I'd suggest getting a pocket WiFi instead - your whole family can connect to it, and it works in most countries. We used this one in Hungary, Czech Republic, UK, Slovakia, Austria, and Germany:
https://hippocketwifi.com/en/pocket-wifi-europe-rental/
You rely on WiFi so much while traveling that it pays for itself in a day or two. Speed was around 25 Mbps in most places which was plenty for light use.
No Turkey coverage I don't think though - could be an issue for you (I didn't even think you could go there safely right now)
Way less hassle than dealing with SIM cards IMHO, and everyone can use it. We used a Pocket WiFi in Japan too and it was definitely the way to go.