Take care of yourself, and try to not be intoxicated when you are exploring your sexuality. Most straight people will not be easily satisfied by fantasies about people of their own gender.
Did you ever fantasize sexually about a member of the same gender as you? Clarity often comes with time, so give yourself a chance to fully discover your sexuality. Some argue that bisexual means attraction to exactly two genders, such as men and women but not nonbinary people , but this is not a common definition.
Take care of yourself, and try to not be intoxicated when you are exploring your sexuality. Examine who gets you aroused.
You like who you like, and leave it at that. If your past romantic history involved sexual or romantic encounters with other genders, encounters that still leave you sexually excited, this is probably an example of sexual attraction and there's a good chance that you are bisexual or straight.