When to Use Certain Minecraft Mods?

I'm relatively new to the world of Minecraft mods and could use some advice. There are so many mods available, and I'm a bit overwhelmed. I'm curious about when it's best to use certain types of mods. For example, when should I use mods that add new biomes versus those that focus on enhancing the game's graphics? Are there specific situations or stages in the game where certain mods are more beneficial or enjoyable? Any recommendations for mods that are great for beginners? I'd love to hear your experiences and tips on when to incorporate different mods into my gameplay. Thanks in advance!