Part Required for a Fuse holder with 15mm pitch

Yes. Part creation is difficult until you have experience (and truly even then, it just gets easier with experience.) For small numbers of parts you are better to ask here to see if there is one or get one us to make it. These two tutorials in the forum cover current versions of Fritzing:

I lately learned there aren’t links to the videos in Old_Grey’s tutorial so you need to do a google search for the title and then they come up on YouTube.

Peter