To me it sounds like something other than depression, however it doesn’t matter because you are clearly right, these are extremely unhealthy thinking patterns and it is a symptom of maybe bigger issues you need to address.

And it is true, everyone deserves love and there’s nothing about you that makes you categorically undesirable. Just some things specific people like or don’t like about you.

You should consider talking to a therapist, or at least someone who is not involved with you day-to-day but understands you. Having someone reality check your thoughts, especially those ones, can be extremely helpful to get a better frame of reference against those toxic thoughts, that are often times not rooted in reality.g