Litematica is a modern Minecraft Java schematic mod. Using the fabric loader. You can use this mod on vanilla or fabric servers. You can download litematic or schematic files and import them into your minecraft world. In creative mode you can actually paste a structure or in survival mode it makes builds far simpler than following a tutorial.
Versionining is often hugely unreliable. Often creators will only test on the version of Minecraft they use and secondly it rarely gets updated. The best thing to do is to download a litematic and test in creative on the version you are using.
If you find a build works or doesn't in a particular version then leave some helpful feedback.
You'll need to install fabric and then litematica (as well as malilib) the easiest way to learn how to install fabric and mods is to watch my tutorial video.
As well as fabric you'll need two mod files to get litematica to work.
I've done a full length tutorial on using litematica, it's split into chapters since it's a pretty big topic.