Is Jesus the Father? I think that Jesus is the Father himself. The Father became man and as man he renounced his divinity, therefore there are Bible passages where it seems that Jesus is not God.
And that is why I don't believe that there is a Triune God.

This may be a ridiculous example, but when I play a video game and control a character, then I take on a new role, I who is in the real world is still me, but in the world of the game, I am another "person".
Maybe it's like Jesus, Jesus is the character of God in this world.
Is this way of thinking wrong?
Let us answer your question as being about what most Christians believe.

The vast majority of Christians are Trinitarian. They believe that Jesus and the Father are separate (though both persons of God).

The main reason for this is the many occasions where Jesus refers to the Father as separate from himself (e.g. Mt 10:32, Mt 16:17, Mt 20:23, Mk 8:38, Mk 13:32,  Lk 10:22, Jn 1:14, Jn 3:25, Jn 16:32) and addresses the Father (e.g. Matthew 11:25, Mk 14:36, Lk 22:42, Lk 23, Jn 11:41, Jn 12, Jn 17).