Please explain

okay i know there are lesbians and some of those lesbians like other girls that look like boys.. but if they are attracted to the male look why not be with an actual male? and if lesbians like to use a "dildo" to have sex then why wouldn't they just be with a guy? this is a completely serious post. also I'm only 14 I'm still learning and exploring so don't be mean about it. thank you.