STIs in lesbian relationships

Hi guys, I've been doing a lot of research lately about STIs (just cuz Valentine's day was a few days ago and my school decided to go all out on the STI prevention) and I'm honestly not able to find a lot of things for lesbian relationships. I lot of people say that they have just never used any protection because getting STIs from lesbian relationships is very unlikely. Others go all out with the dental dams and the latex gloves and everything and I was just wondering... how much of it is actually necessary? I want to protect myself but I also don't want to look like Bob the builder in bed lmao. Thank you everyone for the help ❤️