Loki Disney Plus - Trailer

trying to wrap my head around this and also 'sacred' timeline
if Mobius is already talking about another Loki so that means more than one timeline
plus there were many infinity stones, obviously from other timelines
so we already have a multiverse...
I'm still not completely wrapping my head around it either, but the other Lokis were Variants. That would mean they were identified by the TVA, and presumably, their time branch deleted. So, they are preventing the existence of a Multiverse. That's how I'm loosely understanding it, but I've been wrong many times before.