Hi fijiisland
I think I do understand a lot of where you're coming from
But
please correct anything I have wrong

Just something
anything, whatever it is is better than "nothing" right now...........and even
imagining there can be something
real out there can seem so impossible/so out of your reach right now........and this fills a "gap" in you......but even the
thought of touching on something real..........can be so scary or.........could you deserve it..........could you live up to it.........would you/when will you get hurt........would you/when will you get rejected.............and even the
possibilities/thoughts of any of that happening can hurt
more than right now...........that's even if you really believe you could get to such a place????
But wanting more.........wanting to be in a better place is an
excellent start!!!
Honestly, I don't think that this is "just" finding "a switch" to click in your head, or maybe not finding "the right person" but perhaps about putting some of the onus back on the people who have treated you unfairly...........because they have (!!)..........and taking back some of that self-worth...........or developing that self-worth......this is about
their failings
not yours.......because you
did/do deserve better.........and if you're struggling with that idea........
even as a
human being with
feelings you did/do deserve better...........which I think you're realising deep down there

And you know, maybe gradually, I know it's hard (!!), you can work towards recognising that even being on your own (!!) is
better than being with someone who's going to treat you as "second"........being "second" would even be perpetuating the way you're feeling about yourself right now, do you think??
Because, believe it or not.........you're, and what you're giving, is worth
more than "second", you shouldn't have to be "second"..........and..........
your feelings should matter

So........this is about
you.........and putting
you first......and setting real boundaries and real expectations.......
and realising your worth........which I totally "get" must be seriously hard right now considering your experience
And now..........what may sound like "textbook stuff", but it
does really matter (!!).........honestly, you
will have positive traits...........things that you can (really) value about yourself, if you dig deep..........and they matter............they're all part of your worth.......maybe if you can see them more for yourself......and they should matter to others (that matter) too.........others who want the best for you...........and in relationships who, as you find them, will put you "first"............
And you
deserve to have boundaries.........to have expectations..........to have that "first" in a relationship real!!
So...........one step at a time, hey??
Maybe try to fill a bit of that "gap" with knowing that you
do matter, that you don't need something from
anyone to tell you that or "fill a gap"!!
And if we're talking about relationships, friendships,
whatever..........you're shy, that's OK

Gradually confidence can be built with self-confidence..........you have time........and an
excellent place to start...........with wanting more for yourself!!!
Alison