aternos is crap, im going to minehut

It's a free host, you get what you get, complaining about something you paid nothing for is pathetic
Your lag issues probably appear on vanilla 1.16, which is an awful version+software combination to play on. If you already use paper or spigot, read this: https://www.spigotmc.org/threa…mization%E2%9A%A1.283181/