If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks

https://brooksrtcg607.cavandoragh.org/frankfurt-airport-arrivals-lounge-freshen-up-after-you-land

If traveling economy, consider pay-per-use Frankfurt lounges in Terminal 2; they provide essentials like snacks, drinks, Wi-Fi, and showers.