forgot lockscreen and gmail password

Hi everybody!

I have a big big problem.
My littl brother hadbeen trying to unlock the phone with his fingerpent.
After several times phone locked and now i need to input my gmail and account password.

Are there any tricksa to unlock my phone without data lost?
May be through ADB or smthing else

- i have no samsung account ( to unlock with Find my phone app)
- i can't acces to my gmail to unlock from device manager

Waiting for some recomendations :cyclops:
Thank you in advance