The huge and most epic mod for minecraft is the add-on – Rediscovered. He collected all the best from other existing additions. You want to put just one mod and add everything you need and the most interesting to the game at once, then download this add-on.
Rediscovered Mod for Minecraft 1.15.2/1.14.4
The author says that he adds functions that were originally in the code, but they were never implemented by the developers in the game. If you describe and tell in more detail, get: blocks, furniture, decorations, traps, mobs, residents, measurements and even the mega boss Red Dragon!
1.15.2 – Rediscovered-Mod-1.15.2
1.14.4 – Rediscovered-Mod-1.14.4