Alright, I skimmed through the first post and from what I have read it feels like there are a couple of things that stand out as possibly bottle necking your novel (in my opinion so take it with a grain of salt)
The beginning part starts out fine to me with the mc in their living situation and the effects of the pandemic on their life. The pacing here feels nice.
But then they reincarnate and get isekai'd to another world.
How did they reincarnate? They didn't die right? Or were they simply transported because they were unhappy in this pandemic?
The pacing gets turned up a notch after the isekai in my opinion. It gets hard to follow for me. I think that the mc gets flung in a different setting with other people and somewhere along the way a information dump comes along about a town named Gadwell village.
Also the mc talks to a god like figure who tells them they are the main character? And finally in town the mc picks up a book from a robed man. There is a lot going on in the second half of the first post.
My main takeaway from this is that you have most likely crammed too much in the opening episode and therefore the pacing feels very rushed.
I think having the mc get isekai'd in the first episode is fine, but you need to let your readers get settled with the setting and characters before you bombard them with additional stuff. Maybe if you have the town section in an additional episode the pacing will not feel as rushed. I think that may be the cause for the bottleneck in your novel.