Can we have an option to return to the old client?

And I mean the real old client, from season 5. This one is so buggy and generally a pile of garbage. Just got locked into the loading screen while the little spinning green circle in the top left constantly spinning, indicating that the long time wasn't my fault and I was connected. After 5 minutes I alt f4 and rejoin and my team remakes.

Come on, at least give me the ability to swap to the legacy client. There's not even any need to maintain it, just make it return and never touch it again. It worked fine compared to this one.