Hey now, be easy on my student. I know what you're trying to do. I see you. =_=

Working with blendshapes. There's no eye movement (missing bones), but she can blink and there's visemes for speaking.

Tomorrow I will make a post sharing this as a gift. I can't share it right now because her futa thing is clipping through the clothes, so I will wait for @alilrotten to teach me how to make toggles.

I'm very happy, it's my first avi and it took me a long time.

I personally never touch rigify, I much rather do things manually. That way if something breaks, I'll know what it is and I can fix it.

Follow along as best as you can. You don't have to go the same speed.
When I used that video I also had no idea what I was doing.
But this is where I started.
Its okay if you need a break or get frustrated. I didn't figure it all out until I kept coming back. A total of 3 years.
Year 1 - Attempted without any help, had no idea what I was doing. Kept breaking the model like an idiot. Gave up every time because Blender looked like code to me.

Year 2 - Came back because I really wanted this kind of model in VRChat. There were none like it and I was DYING to have it. (It was a female Tails if you must know. It was cute. Not sexual at all. Took it off a SA2 mod). Figured out about bones, but was scared of weight painting. I seen my friends do it and it looked exhausting. Gave up because I was overwhelmed.

Year 3 - Grit my teeth and search high and low looking for SOMETHING that could teach me what I wanted to know. How to rig and weight paint. Took me WEEKS to find it. It worked out for me. I followed the video like it was my guide to survival. I kept replaying it over and over again, learning, watching, drilling the information into my head because my memory is terrible. I worked on it every single day, trying over and over again. Slowly painfully weighting the model. I just wanted it IN VRChat. I didn't care about the bells and whistles.
Had an issue where the model's tail would be inverted. Inside out if you will. Took me a month to figure out how to fix it. Found a video that told me it was a face issue. (Shift + N) such an easy fix... I didn't know about shape keys yet, but I learned about eye movement and how to weight paint and rig, that was good enough for me.

So, like I said: Its okay to take a break. I kept taking breaks and it was the world's most simplest model.