I'm a pardo. Yes, it's a possibility. I know very little about my family history. The only thing I know is that my grandfather's dad immigrated from Portugal, but I know nothing about his life there. I know even less about my mom's side of the family. It's a mystery tbh. I should get a DNA test to confirm my ancestry.
That being said, it's worth converting to Judaism especially if you are a third worlder like me. You will be eligible for Israeli citizenship due to the law of return. An Israeli passport is very powerful, you can travel to any western country without a visa. Once you convert, you will be part of a mighty gang, a force to be reckoned with. The Jews are very rich and have a lot of connections.
Christianity is the religion of mutts, the religion of poor European peasants. Judaism is the religion of the elites. The Jews practise the religion of power, wealth and influence. Meanwhile, Christians are worried about virtue signalling and bending btbhackwards for secularism.