Colour not filling properly

Maybe this video answers the question: https://youtu.be/LxH9h2-luXo

Parna,

As far as I can see, your ailing shapes consist of paths that are open and/or have gaps.

The fill follows the path as long as it goes, and then it forms a straight boundary line (without the stroke if the path has one) between the far ends.

So I am afraid you will have to look closely at each end of those straight boundary lines and close the path by joining points and/or adding segments and/or whatever else is needed to get it right.

Can you describe more steps what are you want to do? Also can you show your shapes separately - in outlines view? Thanks