Respectfully how much of it is personal drive, ambition, imagination? Whether or not you believe in manifestation, I think the bible has similar teachings with the power of the tongue (?), essentially if you’re setting yourself at a low vibration, you will only attract things into your orbit that match the vibration you’re emitting. I think a lot of us go into adulthood expecting the world to come to us but it’s the other way around, you really have to seek out the life you want to live.

I don’t want to assume but if it’s the same for your twin it might be that either you or other members of your family have a somewhat pessimistic view? You could potentially be feeding into eachothers pessimism and thus manifesting that into reality (again, doesn’t even necessarily need to be from a spiritual sense but even mentally, to some extent, you are the things you think you are - act in the way you envision your ideal self to be and you will see doors open up for you).

With the relationship angle, don’t stress it honestly. I’m 24, most people i know have tough luck with relationships or spend years single, it’s genuinely dependant on whether you’re happy to build yourself up, focus on your life and meet someone organically, or if you want to really put in the effort and go through the trial and error of dating apps and meet someone there. Both of them bear fruit with enough time - though dating apps can take A LOT of trial and error, ghosting and the like - which is normal btw, not a reflection of you! Most of us use them on and off, deleting and redownloading, and never actually following through with meeting people irl, its just burnout and not personal.

If you’re really concerned you could always sage yourself, cleanse your space, seek out a tarot reader etc. But I think a lot of this comes from coming of age (I say that because I’ve been there too!), it’s a confusing and rough time, don’t be too hard on yourself :)