@Maciej-Bienkowski I actually like your green 🙂 the only thing you might want to consider is to give your logo a transparent background so that it doesn't have the black box around it...perhaps the person that made your logo gave you a png file? e.g logo.png - that is the format for a transparent background alternatively you might be able to use https://photoscissors.com/
not sure about this site as I haven't used it but you would get a freelancer to do it for you online for very little money 🙂