Evolution vs Creationism

Evolution states that things began as the most simplest life forms, such as bacteria or parasites, then gradually made its way to humans and greater life forms after a long while (a million years or two). But darwin aslo had some back up as to why not all forms of life could not live. this was through "natural selection". survival of the fittest. For example, a life form that had advantages in a certain habitat or area, could surely survive than one that did not have that advantage
Creationism is more like a step of processes that eventually created human life. For example, one day there was light and so forth. But the ultimate argument is that can it be proved this life form exsists and did all of this within 7 days. There was also a belif that the 2 first humans were called "adam and eve" and through those two, created a human population and made us the way we are today.
I belive in evolution rather than creationism, because unlike creationism it has a strong foundation. but like many therories it does have flaws and problems. For example, even before evolution, how did the first life start and how was it created?. even though it is hazy, it does make more sense than creationism ( at least in my opinion ). because creationism says that one supposedly great created everything in 7 days like a recipe or somesort. Im buddhist, so they tought me to belive in other things rather than one indivual idea or statement. But, the person who created this theory was human after all and could have made a huge mistake into thinking we started as simple life forms.