If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks
https://knoxqshp992.yousher.com/finding-airport-comfort-zones-at-frankfurt-quiet-corners-and-lounges-1
If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks, Wi-Fi, and showers.