Using the Vanilla Launcher?

We don't provide support for the vanilla Minecraft launcher due to its frequent and challenging-to-resolve issues. It's advisable to use a Minecraft client for several advantages. If you're experienced in installing mods via the Minecraft launcher, you can proceed independently, though we're unable to assist with any potential issues. While mods are typically designed to be compatible, conflicts may arise, requiring manual adjustments for seamless operation. Minecraft clients streamline this by managing dependencies, enabling you to easily incorporate multiple mods. If you're seeking a user-friendly client, consider exploring alternatives like CurseForge, among others.

Is your Client not listed?

If your launcher isn't listed, you can opt to download the CurseForge version instead. Follow similar steps to locate the import option and select the appropriate version. Alternatively, if that method doesn't work, you can create a 1.20.1 profile for Fabric (if applicable). Then, manually transfer the contents from the CurseForge folder (including Config, Mods, Resource packs, and shaderpacks folders) into the corresponding profile folder.