So im really confused about melodies because when ever i watch interviews they never explain where they actually come from. The only one i've seen was martin garrix tremor which he came up with in an airport and sang it into his phone. But i don't understand are all good melodies just something that comes too you because that never happens to me anything i do is just experimentation which takes hours over weeks. Also how do those super complex melodies come to people like kshmrs(bad example) or something i don't see how it happens and I read these things like anyone can write a hit melody in their head but can't put it down and im like what i can't do that and if i could i would just record myself singing it and play it back for hours until it was the same as my paino roll.

Also is there any tips for making them more interesting because i can make melodies but they never fit into songs cause they sound boring or are too fruity.

It's a little bit of column A, column B. You're not always going to have a melody spring into your head, so sometimes you will have to force yourself to write something. Sometimes it's much like computer 'brute-forcing': trial and error of just trying every possible melody until you find one that works. The more critical music listening you do, the more your taste develops, and you'll use it to discern a 'good' melody from a 'bad' one.

Complexity in a melody can result from layering lots of small individual parts to make one big one. You might think 'how am I supposed to build this fantastic jaw dropping melody from nothing' and be disheartened because it seems like you have no foundation. But every melody started with just a note. Keep building and removing and trying everything you possibly can and you will find something you like if you persist.

Nike says: Just do it

Buy a MIDI pack with melodies of the genre you like to make. Then use them to learn the progressions and all that.

I recently paid for the program Odesi by Mixed In Key. For a beginner, it could be a good tool to help make melodies over certain chord progressions.

man, at the beginning, I also had the worst melodies, but believe that with time and more experience, you will start to gain that ability to make excellente melodies, sometimes a good melody comes when you just say let´s play some chords in the c major scale randomly, (this is one of the best ways to get good melodies when you don´t have ideas) and in 15 min or less something cool can come out, to me sometimes I just say ok let´s imagine a great melody or I just start thinking about them and that´s another way that melodies can come out, melodies can also come when you are listening to a track and you start imagining a good melody taking that song as a reference, be patient! anything can inspire you! good luck

HookTheory.com is incredibly helpful for building melodies.

BasicMusicTheory.com will give you access to scales and chords within different scales.

There is a lot of theory involved with writing melodies that resonate with large groups of people. Everyone has their own unique preference but certain note patterns on top of different chord progressions will elicit very specific types of emotional responses from huge swaths of people.

For example,having a melody start on a perfect 5th or perfect 6th and having it "resolve" to the root note at the end.
Hook Theory has a lot of EDM on there so that might be a good place to start.