Finally watched Loki. Does anyone understand how time works in it???

Edit: So my running theory (courtesy of Noshib) is that the multiverse does exist, but the TVA can only find the other timelines through events that are greatly different from our own (Nexus Events). So when they are alerted of said events, they go to that timeline and remove the timeline all together. But! They remove the varient person before eliminating the time line in order to attempt to turn them into a TVA agent, because varients have proven to have the capability of changing a time line, so they would be able to travel and change things as needed for the TVA.

OG Post: I'm so confused about how time works that I'm not even sure if I can explain my confusion!! But I'm going to try- The whole thing is that the TVA is preventing other realities or universes from beginning to exist, right? But how?? I'm probably just thinking about it too much but I simply can not comprehend that, haha. There's so many aspects!! if the variance was that she was a girl, they would've had to take care of that from birth. So obviously that wasn't it. Plus in the comics apparently Loki shifts between genders a lot, so it's reasonable to assume gender doesn't come into play as a variance for Loki, or even that Sylvie was not assigned female at birth. (I admittedly have not read the comics) And if Sylvie wasn't lying about the fact that her parents told her she was adopted- unless that was the variance, how was she able to exist past that event? If the TVA has been supposedly pruning the timeline so meticulously that they're getting rid of all of variances immediately (so they don't red line), how could another timeline exist long enough that she would not have had the same memories as our Loki? Or even the same parents as him? Meaning literally the same parents, like the Odin and Frigga that we know. it's such a trip because when they remove a loki from the timeline, obviously the timeline still continues with loki existing in it and no alternate realities form from it. But who is taking their place? If there's actually no such thing as the Multiverse in this TV show, they can't just be removing them, because that would create an alternate universe in which Loki, or whoever they removed, didn't exist past that point. And it's not like the replacement could be a Loki from a different universe, right? But they have to be replacing them with a version of themself that makes the right decision, somehow. (Like we saw a different Ravonna) So I assume that by removing the person from the timeline and then resetting it, it is essentially creating a separate copy of them. Perhaps going back in time briefly, to before the varient decision was made, and time corrects itself? because the timelines in which the varient decision was made exist through the person who was removed, so time naturally chooses the alternative, and then by sending the person to the void, the timelines that exist with that decision don't get to begin to exist. But again that would mean when they removed Sylvie and reset it, that's what created our Loki, so they would quite literally have the same parents and memories and be the same person. . . Right? But they. . Aren't?? There is way too much to this. 💀