1. Download and install Prism Launcher
2. Click Add Instance
3. Choose Vanilla, pick the same version as the main page
4. Select Fabric under Mod Loader and click OK
5. Right click on the launcher that you just created and click Edit
6. Click Mods
   1. Click download, search for Sodium and Iris and double click on them
   2. Click Review and Confirm and click Ok
7. Under Resource Packs, download a pack if you want a different look
8. Under Shader packs, download BSL Shader
9. Under Server, add minecraft.uberkitten.com