Первый полностью рабочий функционал

handlers/groups/chat.py

@@ -0,0 +1,12 @@
+from aiogram import types
+from aiogram.dispatcher import FSMContext
+from filters import IsGroup
+from loader import dp
+
+
+
+
+@dp.message_handler(IsGroup(), content_types=types.ContentTypes.ANY)
+async def bot_echo_all(message: types.Message, state: FSMContext):
+    if message.sender_chat is not None:
+        await message.delete()