I asked a very specific question. How does this force from below work? As far as I can tell this is the first time you have mentioned it. But every analogy you give seems to require something of this kind. I understand that these are analogies but now you say that there is this force from below. How does that force work?
Without going into how the sun works, let's accept that my sun in the centre of Earth's circle.
The suns energy inside Earth creates pressure veins or fissures. Think of it like a tree root pushing out but only super hot expanded molten energy from that central carbon arc sun core.
Ok, all of this stuff creates more expansion and that expansion pushed up through more dense matter and using the more dense matter below as the leverage to that push up.
This continues in what we see as solid matter until it gets less dense and less dense as the matter expands and separates.
Think of it like a jaw breaker.

Now here's the key so put some thought into this.
That jawbreaker would be the dense matter in the Earth. Super dense and holding all the ingredients for all mater.
Take this as a singular piece of matter.
Ok so now we have to break this down.
We have to add energy to expand some of this, upwards.
The way it works in by super energy peeling it but as it peels, that peeled part decompresses and becomes a part of the jawbreaker. A hanger on between others of s similar look at that depth in the energy zone.
The core of this jawbreaker would be your hydrogen/helium type elements.
They are super compressed at that depth but as the jawbreaker was peeled, the closer you get to each singular element.
Add the clingers on to each other and you create different elements to our vision and usage, kind of thing.
Ok, so every time this is happening, you're creating a push against resistance by expansion into more dense matter that tries to crush the matter but only pushes it up.
This happens all the way to the top where you are nearly all peeled of jawbreaker and only leave so many skins.
This is when it becomes a liquid up top, like water and eventually atmosphere.
It's still a smaller dense piece of matter when pushed into other similar pieces until the stack up becomes such that there isn't enough leverage to push up against below.
We then end up with a upper dome of clear frozen expanded molecules against a true vacuum.