Minecraft nether bugg?

I play for a long time in one world (alone on the bedrock) Minecraft, I built a lot, etc. Defeated the Enderdragon everything went well, meanwhile I've been looking for netherite and I sometimes come out of completely new Nether portals that spawn about 100 blocks next to my self-built city does anyone have any tips on how to stop this or why that is there?

and one more question have 2 bars what should you always convert to netherite first, pickaxe or something? I don't know my way around there

I don't know if you do. But if you switch to the upper world and then go into the Nether then you will be spawned to a random location in the Charged Netherworld. Quasi through a new portal. So that's how I experienced the whole thing

So do i just get a new portal? Or how huh built one for me but often when I go out there's just a new one behind my village

If you have a portal in the nether what you have built. And then go to the upper world and then back into the nether then you spawn I think through a new portal in the nether. That could be the reason why there are so many. If you are only in the nether and do not go back and forth then it could be because the animals use the portals and go back and forth and then create new portals

I would always upgrade my pickaxe first and then my sword