Personally, I like starting with chords, then layering in a simple melody, then slowly making it more complex. I sometimes add drums, but sometimes there’s no need for any drums. It depends on what type of track I’m making.
If you having a hard time looking for a melody, I suggest placing random notes down. Just spam the screen. Then play it back and adjust notes to fit in from the top to the bottom. You’re bound to find something you like. Any other tips can be posted here
Take 15 minutes to browse in one of the sample packs and favorite the ones that sound interesting then when you make a track you don’t have to take forever searching for good samples because they’re all in your favorites.