maybe you are trying to hard?
are you co-dip? if so you might be pushing guys away (too clingy),
learn to live alone for a couple of years - make peace with being alone - learn about yourself.
then you will have something to offer others.
nothing bad about being alone - i've been alone all my life - not happy about that - but at peace with it. and if/when i find another, i have a centered complete self to bring to the table.