I'm not a particularly superstitious person but I did a bit of research on Friday 13th. It was very interesting. Friday in itself is considered unlucky and we all know about the number 13. People just lumped them both together then to create the dreaded Friday 13th.BTW Fri 13th 2020 was quiet as a mouse here.
Which is to say, somebody crashed during rush hour, and there was the usual crime etc.
But nothing Earth-shattering, or we'd all be talking about it.
Of course there's no historical evidence to suggest that Friday 13th is worse than any other day for unfortunate events. And if you're ever at a dinner party and the subject of superstition comes up you can wow the guests by informing them that the fear of Friday 13th is called......Paraskevidekatriaphobia!!!
Though obviously you need to be completely sober to avoid making a total arse of yourself with that one, lol.