what is the point of mod in this game? and what are the essential mods that wont change the game significantly

[JapaneseMom]

hello, i am not that familiar with game modding, since i feel like its just making your game "fun" temporarily. like example "meme mod" or "putting your favorite anime song in the game". nothing is groundbreaking something that feels essential or revitalize the game. but after watching from one of the reviewer, he said that the developer of this game only allows modding for original/authentic owners only, means if you are using the pirate version of factorio, you need to buy the game if you want to mod it. sounds interesting, but then again, i really have no idea on which mod that is actually helped me playing the game without breaking it/making it too easy? does any of you guys have any ideas or suggestion? thank you

i know there is that one popular mod that expand the universe of factorio with new resources, lore, enemies, etc. but considering that i havent even finish the game yet, i feel like its inappropriate for me to get that mod now

[Koub]

Mods are not mandatory. They range from cosmetic to complete overhauls, with QOL and more or less game changing in between, new mechanics, for maximum replayability.
If you enjoy the game as it is, you can play vanilla. If you with some aspects of the game were different, changes are you'll find a mod that does it.