LMRA

This is a medieval-style mod pack that includes magic, new weapons, armor, village creation, and much more. 

You can craft a variety of weapons and shields and also collect a variety of artifacts while your villagers collect resources or while you work on new spells and potions. This mod pack has better visuals and sounds that make the game more immersive and there are also a ton of new blocks that you can build and decorate with. On your journey, you may encounter new dungeons and a lot of new creatures that you can tame, fight,....or just ignore.

For older PCs, you can try the less demanding version of this mod pack - LMRA lite: https://www.curseforge.com/minecraft/modpacks/lmralite

One of the key features is exploration. There are plenty of new biomes and types of villages to discover. Some villages may house vampires or vampire hunters, so be careful! You can also create your own village from scratch with the MineColonies mod.

There are also a lot of new mobs that you can tame or defeat. Some can be very useful on your journey and some are there just to accompany you. You definitely won't feel lonely in this world.

If you stumble upon a dragon egg you can grow the strongest companion there is. With his help you can forge the most powerful weapons and armor there is. It does require a lot of resources though.

And If you somehow become a vampire, you can drink the blood of many creatures that cross your way. You can also perform rituals to level you up and become a vampire lord that can control other wild vampires.

These are just examples of things that you can do. This mod pack contains many more fun mods for you to explore.