What are they doing to make you happy? I’m not saying you should always expect someone to make you happy because that should come from within. However, are they matching your effort to make the relationship work? Do they do things for you like get you a coffee made your way? Do they plan dates? Do they just surprise you sometimes?
If you are the one doing everything than you probably need to have a talk People show love and effort in various ways so maybe they think they are putting everything they have into the relationship.
However, if after that you still don’t feel the effort you want in the relationship than maybe it’s time to move on. You alone can decide what you can tolerate. It’s OK to want more but just be sure what you want is realistic. Don’t make it so that no one could be what you want because the standard is too high.