We created GitPlex to manage our own code as result of not satisfying with existing tools on the market "...not satisfying"? I think what you want to write her

We created GitPlex to manage our own code as result of not satisfying with existing tools on the market "...not satisfying"? I think what you want to write here is something like this: "We created GitPlex to manage our own code as a result of dissatisfaction with existing tools on the market" or even better, a sentence shorter than that.