@Alexis520 Your age is not displayed to hosts when you make a booking request, and it's generally not something they're going to ask about. But you're going to see more hesitation coming from the fact that you have a very new and incomplete profile. So before you start trying to book a home, I recommend that you fill out the profile text, add a clear face photo, and complete the ID verification step.
Then, when you find a place you'd like to stay, write a request message that demonstrates that you've fully read the listing and the House Rules. It helps to say a bit about the purpose of your visit (especially considering the pandemic circumstances). And hosts value enthusiasm - saying something you really love about the listing inspires confidence that you'll be a good fit and leave a 5 star review.