I went to the Nether using the Nether Gate,but the gate was surrounded by lava and by the time it loaded,I was already dead. He can't go to the Nether because he dies no matter how many times he enters. Lava was flowing and coming to the gate,so that this doesn't happen.

suggestion

-Become invincible for a while after warping at a nether gate.

-Warp to the Nether after the terrain of the Nether is loaded.

-Warp to the center of the Nether Gate. (Because it protrudes from the center and comes into contact with lava.