Minecraft datapacks are typically smaller modifications than traditional mods, but don't require needing to install Forge or Fabric. You can download datapacks from websites like Modrinth or CurseForge.
1. Find a datapack to download. For example, Dungeons and Taverns.
2. Download the zip file.
3. Open the File Manager
4. Navigate to /minecraft/Indifferent_Broccoli_Minecraft_Server/datapacks/
*Note: Your world folder may be different than in the above path. It will match your Custom Save Name in the control panel.
5. Upload your zip file to this location.
6. Restart the server.
7. With admin permissions, run the command /reload
To check if your data packs are enabled, you can run the command /datapack list enabled