I think it's much more than just retrograde planets. Not only are your Mercury and Venus both retrograde, they're in the twelfth house, along with your sun. The twelfth house is the hidden house. Can feel inaccessible. And, you have Chiron conjunct your sun. That right there could lead to a diminished sense of self, feeling like you're not quite there. Cancer rising, too: one possible manifestation of Cancer is the Invisible Person, the person who just doesn't seem to be noticed or present.
And, perhaps a bit less pertinent but still relevant, you have Venus and Mercury under the beams--that is, less than 8.5 degrees from your sun. Planets that close to the sun are invisible in the sky, because the sun blocks out their light. Some astrologers consider that to mean a weaker manifestation.
Did you grow up as the lost child in a family with addiction or other major dysfunction? That's one possibility with your chart. Not guaranteed, but very strongly possible. If that's not what happened, then there's something else that's manifesting that way. Not being able to relate isn't just an astrological thing, it's also from life experience. One describes the other.
