Honestly if you're not enjoying vanilla. . .I doubt mods are really going to help that experience.

I played a good 50 hours to get the feel of the game before looking to mods just so I could learn what the game's base parameters were. If you're not finding enjoyment with those base parameters I'm not sure that mods that expand the game would do anything more than frustrate you. . .however.

A few QoL mods:

Item Stacks: Allows you to carry more items and adjusts their weight accordingly. Configurable to find a good balance if you prefer (I personally just the default settings).

Unrestricted Portals: Does it says, removes the restriction on ore/metal for portals, configurable to any degree you want.

A lot of people recommend Valhiem Plus: I haven't used it so I can't speak to it.

Farm Grid: Just helps lay out plantables in an easy grid (and helps things look nice)

EquipmentandQuickSlots: Give you three quick slots independent of your hot bar and a set of slots for your wearables to save up on a little bit of space

There are plenty of others for crafting, adding build pieces. . .those are my personal staples