If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks
https://manuelyjsz001.lucialpiazzale.com/frankfurt-airport-lounge-catering-culinary-highlights-and-drinks
If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks, Wi-Fi, and showers.