How to make a guy reject me in an AM setup?

I (28F) is facing conflicts with my parents regarding arranged marriages. Now the thing is, my parents are concerned that I'm of a marriageable age and I should get married soon. The issue is (1) I am currently doing a PhD and I'm at a really critical juncture, and I cannot afford any kind of distractions, (2) I don't really understand the concept of arranged marriages, and my parents are rejecting my choice of guys, (3) if I abruptly say no to a guy then my parents try to convince me that my reasons for rejection are "manageable" and ultimately my opinions don't matter, (4) if I tell a extremely dramatic story to the guy so that he rejects me, then I'm afraid that the guy will tell his parents, and his parents will tell my parents, and that will create issues for me, and (5) (the most critical point) my family faced some traumatic events and thus my parents are extremely vulnerable and I avoid hurting them more, because if they get hurt them they start crying and get sick (I understand that ideally it is adult tantrums) and I get afraid of that (because even I'm traumatised). Now, the only way left for me is to make the guy reject me, because my criteria for rejection isn't considered, and if I'm harsh then there's emotional tantrums which I can't afford to handle. So can someone please suggest me how to handle such situations? What are the things which are biggest red flags for even the most desperate or innocent guys? PS: if you hate me and think that I'm manipulative then please understand that I havevto be manipulative because of the point (5) Edit (and note for myself): the most common solution suggested here has been to be honest with the guy. I'll talk honestly to the guy if he seems understanding enough and if the situations permit, otherwise (sadly) I'll have to go through the unethical ways. The unethical ways suggested here are me convincing him of me being: asexual or bisexual, excessively chatty, a toxic feminist, generally toxic, and nosy about my demands related to his money or status. Or else, convincing my parents that he has some bad habits (I will never do this).