Hi,
Request you to kindly bear with me and feel free to ignore anything that is not to your taste or liking… for it looks like you have very limited Yogas for marriage. The delay is quite evident and unless I’m terribly mistaken, there seems to further delay tending towards denial.
Given the situation and assuming you really have a strong desire (not peer, family or societal pressure), it might not be a bad idea for you to reflect on any rigid expectations you might have, try to reconsider and recalibrate to have reasonable or moderate expectation and be open to entertaining any acceptable unconventional alliance (including inter-caste, inter-religion, distant region etc.).
Take care…