It seems to me you place credence in the curse because you have a list of things that feel like proof, yet when it comes to other magicians (and don’t get me wrong, I’m not saying you should hire this guy, or any other) you feel doubt and skepticism.
This proves the validity of the advice “If you’re not sure magick is real, do some to find out” - but that’s no use to you, if you keep holding onto doubt.
I don’t know what your ethnic background is but I honestly suggest asking the gods of your forefathers (whichever area you identify with, could be a mix of several) to step in and help you out this rut, because you’re just going in circles, believing in this curse but not yourself!
That makes no logical sense, and by now even if there was no curse to begin with, you’re kind of attracting one yourself by focusing on it so much - and this isn’t “law of attraction” stuff even, luck is a skill and the people there who believed themselves unlucky were able to reverse their situations without a single demon or magickal chant…
You have a choice to make - dither about wondering if magick is real, if X. spirit is real, if some dude on the internet is real, or draw a line under the past and commit to doing whatever it takes to become lucky, blessed (opposite of cursed) and let go of that bad stuff.
You might kind of want justice, even revenge, or just answers, but you’re not going to get them (especially in the situation you’re in right now), and the more you look back trying to make sense of it all, the more you lose the present (and future) to this stuff.
I know I’m lecturing but I’m deadly serious, you’re wasting your one and only life over phantoms and even if you were cursed, you’re feeding the situation too much energy and thereby making it worse.
I’ve not had this exact same situation but I do know what it’s like to waste years of my life over futile desires for some kind of closure or whatever, and during that time be just about as miserable and unlucky in that area of life (love and romance) as it’s possible to be, so I’m really only telling you what I wish someone had told me back then.
Do some of the simple methods listed on here (egg limpia, call on some angels for protection, call your ancestral gods, do cleansings) and move on.
Make a plan for it if it helps, set a date, or just resolve to wake up tomorrow a reborn man, and with all that stuff in the past.
And read that link about the luck study, it’s pretty eye-opening stuff and totally scientific.