why am i only able to manifest ‘certain’ things?

now before i start, i want to just preface by saying that yes i am aware that you can manifest anything and that the title’s statement^ is just a limiting belief. but i’ve had this question for awhile now…

i’ve manifested things just by deciding once, like my sister staying in my home country for work one week despite everyone else telling me she was leaving, to dinner reservations at the restaurant i wanted to eat out at, and smaller things like seeing a blue butterfly. at some point before my manifestations (the sister and dinner reservations one) appeared in physical reality, i also kind of accepted the 3d as it was, wasn’t bothered by it and told myself that i was fine not having these things.

however, there were some really huge things that i really wanted in the past that i’ve manifested for that didn’t come to fruition. despite not thinking against it and never ever seeing the possibility of getting less than straight As on my a level report card, i still ended up getting the grades that i didn’t want. and even though i kept telling myself that i got an early admission offer from a university that i wanted to get into, they ended up not sending me an email during that timeframe.

i’ve been applying loa since aug of last year and i do believe in it, but i just feel quite frustrated, and i was thinking maybe it would be better if i just detached myself from the things i wanted so that i wouldn’t get disappointed (also when i say “detach”, i meant not caring whether i receive them or not and just going wherever the wind takes me LMFAO)