The user has to enter the email twice to get the next message from the bot

Question

I'm writing a bot on aiogram and have a problem. The user has to enter the number twice to get the next message from the bot. Here is the example:

Bot, [24.06.2023 20:54] Write email

Рамиль, [24.06.2023 20:54] @

Рамиль, [24.06.2023 20:54] @

Bot, [24.06.2023 20:54] Choose action:

Here is the code

@dp.message_handler(state=Form.email)
async def process_phone(message: types.Message, state: FSMContext):
    email=message.text
    if email.startswith("@"):
        await Form.next()
    else:
        await message.answer("Write email pls")

What is wrong?

i tried this but it didn't help

@dp.message_handler(state=Form.email)
async def process_phone(message: types.Message, state: FSMContext):
    email=message.text
    if email.startswith("@"):
        await message.answer("Write email plsss")
    else:    
        await Form.next()