Moving survival base?

I just started playing after watching some pewdiepie and realizing how much stuff has changed in past few years, it’s awesome. I hadn’t played since it first launched on the console and now I’m on the java edition so it’s like a whole new Minecraft game for me. I love it.

I just created a really nice base that I really like a lot but I’ve went on long journeys and my Minecraft seed is kinda bad. But I didn’t know if it was possible to like copy my home base and then paste it on a new seed, can that be done? I saw some stuff like World Edit etc but that’s only for Multiplayer servers? I’m playing offline in single player.