Hey it's not weird it's common as it's your first solo trip. You can explore and enjoy more in your solo trip. Don't be scared it's gonna be fine. You'll have a whole new experience. All the best..
I would suggest please do not travel in dec. i know it js the only time that we all want to go goa. but i guess due to this coronavirus thing you should avoid it
Being scared isn't weird at all
not scared can be weird everyone feels the same way for first solo trip. But it shouldn't stop us. Pack your bags and leave.