Hello,

I am a complete beginner in inkscape and design in general. I have a design here that looks very weird and boring. The colors don't really fit either.
Can someone help me please?

Inkscape's Help menu has a tutorial on the basics of design. Also found here: https://inkscape.org/doc/tutorials/elements/tutorial-elements.html

I love using this site for colors :D  Coolors - The super fast color palettes generator!