This morning i attempted 2 runs and they both ended up the same, although i put the portal where its supposed to be, but i spawn somewhere else. Please help!

I found a seed in minecraft when trying to speedrun random seed glitchless on 1.16.3. I found a seed that has a really good overworld, with a village nearby and a lava pool right next to spawn. The nether though, isnt as great. Would it be possible for someone to change this seed in a way that the only change is the nether?

I found a seed in minecraft when trying to speedrun random seed glitchless on 1.16.3. I found a seed that has a really good overworld, with a village nearby and a lava pool right next to spawn. The nether though, isnt as great. Would it be possible for someone to change this seed in a way that the only change is the nether?