need some help my mazda 3 drivers side door got stucked can even open it manually with my key, and even inside i can't flip on the **** to open unlock it, kindly help.

 

I would first check the lock switches. In most cars you can pry them out. Don't forget to check the fuses.

If the switches are o.k and you can't open the door at all you need to have it slim -jimmed. (I am thinking you might be in Germany: the ADAC and AvD can slim jim doors)
once the door is open you can remove the inner door panel and access the door lock actuator and look for problems there.