Chances are next to none. The stars if the right size has a habitable zone then the galaxy's have a habitable zone. Then the planet has to be the right size with a magnetic field to protect it from radiation. Then it needs protection with bigger planets close to them. Like a huge vacuum cleaner the takes the hits from asteroids.
Then it needs a proper size moon to help with the weather pattern. Everything has to be perfect. The moon can not be to close or to far.It has to be the right size also. The star has to put out the right type of light. No Antarctica no life. And there is much much more.
Look up bacterial flagellum. This might get you into some debates. Darwinism and believers that believe there was a creator. Look at it in a neutral mind. There are 5 or 6 main parts
that have to come together at the exact moment. Can not seek the parts with out the other parts.
It would take a chimp pounding a typewriter for a very very long time (millions of years) to come up with the word Hamlet once. The evidence is right in front of us. We are comfortable with are surroundings and has blinded us.