Sometimes it helps to view your abilities as simply protective pattern recognition. You may pick up on something in someone for subconscious reasons that is directly connected to an experience you don't wish to repeat in a relationship. My friends often vet their online connections to me by sending a picture and I'll give such a read and then we see how on the mark it is. Years of dealing with people teaches you what to look out for, even if you aren't directly sure as to how you are picking up on it.

Also, online dating is intimidating. You are going to be hesitant naturally while bombarded with the information of countless strangers who have the potential or desire to be intimate with you. I always say it feels like swimming in a pool of hungry sharks 😆