I’ve spent 5 minutes trying to work out what this image is of, without luck.
Mondoshawan key sticking out of its fingertip after its hand is crushed in a door, from the movie The Fifth Element
That someone better is you. Research is always like that. If you started your project with all the knowledge you gained from doing it, it would only take you two weeks, sure, but the whole point of research is gaining that knowledge and teaching it to other people.
Also don’t forget that you may not even be good enough to have impostor syndrome
+5 buzzwords on the paper’s title or you’re not trying hard enough
As somebody with just a bachelor’s degree: getting it done in 4 years is still extremely impressive and I’m proud of you stranger