Hi! I checked a while your piece. I Read it all until ep, 14, and I have made myself an opinion.
We have absolutely no idea what is going on. In what kind of world they are. What is their porpuse, etc. And on a personal note, I think that its too hard to make comical and horror to work together, but that is only my opinion.
About the storytelling, maybe you would like to check some concepts, like the the hero's journey, and try to stick to only 1 genre for now. Because you may want to do too much and don't get to do them all.
I know that it may be hard to hear, because you have invested time and effort into this comic, but I am not saying that your work is horrible, but as you recognice, it may need more work in certain areas. I don't know if you have done this before, but try to do some short comics. One or two pages. Grab some micro stories and try to put them into those 2 pages. It helps you to develop a lot of abilities, and at the same time it helps you to get confortable with the software and work other areas such as color, style, palette, etc.
Here its an example from me (I just translated for you, so sorry if there is a syntax problem)
Lastly, your biggest problem arise since chapter 11-12. Here it appears 2 new characters, one hidden and another who is an escapee as your others charas. And as you portrayed the action its very confusing. I am not clear if they knew each other from before, if they meet at the lab (I am not even clear if they now that they were on a lab!), or if they are talking for the first time, and all the action from there it can't be well followed if that issue its not answered, Why are they casually stoping to eat? Why aren't they searching for help in authorities? Why do they need to keep as a group? There is a lot of question that you need to answer before to all make sense, and that doesn't mean spoil your mystery. You have to set some basic rules for everyone to know. Only when you know very well how to do that, you can play it otherwise, like the movie 'Hereditary', where the script is done with the idea to hide everything from the viewer to add suspense.
Well, I think that most comments have already told you a lot on what to work, plus mine, so I gonna leave it at that. Hope that this helps you accomplish your goals!