First off, evolution and the big bang are completely separate subjects, and neither theory depends or relies on the other.
This is a major misconception about what the 'Big Bang' was theorized to be. First lets sort out the terminology. The 'Solar System' is comprised of those objects- planets, moons, asteroids, etc.- which circle or 'orbit' our sun, such as Mars, Neptune, Saturn, etc. The Solar System, while incredibly ancient, is not the beginning, and itself was forged over billions of years. The Solar System wasn't instantly created as we know it by the Big Bang, it formed over time in the aftermath of the Big Bang, which produced the rudimentary 'elements and chemicals' which, through further reactions and events, would eventually come to form matter as we know it.
The Big Bang isn't theorized to be the event that turned random elements and chemicals into the earth/the sun/etc., its the event which is theorized to have begun our Universe, long, long before the earth/the sun/etc existed. The Universe, based on this theory, is an event; basically a massive explosion. Much like smoke, fire, heat, shrapnel are the byproducts of explosions on our scale, space, time, matter and energy were the byproducts of the Big Bang, and we all exist within that ongoing aftermath. 'Where did the explosion come from?' is an incredibly good question, especially considering it's theorized to have taken place in the absence of space and time, but there are answers being sought out, many of which are incredibly difficult to wrap one's head around without a degree in quantum physics. It is, for example, theorized that 'Nothing' is just an abstraction, and doesn't exist in nature. That even i the absence of all space, time, matter and energy, massless but incredibly powerful and self-destructive sub-atomic particles are constantly winking in and out of existence and trying to tear themselves apart, and that a natural byproduct of this 'angry absence' is explosive reactions, 'Big Bangs' as it were. This theory suggests ours was not the first, last, or only big bang; that our universe is one of many, perhaps an infinite number.
It's true, you can't create life with a bucket-fire, but the big bang theory has nothing to do with the inception of life. You can, however, create diamonds with a really, really strong bucket-fire..
and suns are the biggest, most powerful bucket-fires of them all, able to completely transform elements. All of earth's precious metals- in fact most of the matter on earth in general is sun-forged.
'Fossil Fuel' doesn't mean 'It's dinosaurs'. 'Fossil Fuel' refers to fossilized algae and plant-matter, most of it from long before dinosaurs or probably even animals as we know them were a thing. here's a little kids edu-video that should explain it.
In fact, creatures living in dark environments for generations upon generations go blind. Eventually, over enough generations, they lose their eyes outright. If light began finding its way into that environment again, and the blind creatures were able to survive, many generations later they'd likely start developing eyes again. Adaptation and evolution are almost synonymous. Evolution is just adaptation in the long term.
Animals who have stayed the same over hundreds of thousands, even millions of years have done so because they've been successful just the way they are. A misconception about evolution is that everything is evolving towards something; that it's some kind of race to a 'perfect' or 'higher' state of being, that humanity is winning this race, and in a few hundred-thousand years we'll all be perfect entities comprised of pure light or something. That's absolutely not the case. Evolution has no ultimate destination, and there is no 'final form' to be achieved.