If you want a scientific biography, "Subtle is the Lord" by Abraham Pais, but you need a degree in physics to understand many chapters (unfortunately for me a degree in engineering was not enough).
Abraham Pais wrote also "Einstein Lived Here" a non-scientific biography, but I did not read it.
I actually have a degree in Physics but I am not sure it is what I want (I don't remember much :D). But I will take a look. Thanks a lot for both recommendations!
Not a biography but I like Einstein's book "Evolution of physics". It is supposed to be popular scifi book, and covers same topics as high school physics for layman. But, it is still good to hear his perspective: https://www.amazon.com/Evolution-Physics-Albert-Einstein/dp/...
You should watch season one of "Genius" (https://www.imdb.com/title/tt5673782/) docuseries which is quite an accurate life events (professional as well as personal) of Einstein
At times the going is tough even if you are a physics professor, because Pais accurately captures the process of discovery which was often messy with unfamiliar equations, strange logical jumps, or subtle mistakes.
I would not recommend the book unless you have taken courses in quantum mechanics, statistical physics and general relativity.
(Historically quantum mechanics and statistical physics were developed together, even though now we see one as more fundamental than the other.)