I like anal so am i gay?

Your interest in anal stimulation or anal sex doesn’t determine your sexual orientation. Sexual orientation is about which gender(s) you’re attracted to romantically and sexually, not which specific activities you enjoy.
Here are some things to understand:

Anatomy and pleasure: The anus has lots of nerve endings, and for people with prostates, anal stimulation can directly stimulate that gland, which many find pleasurable. Physical pleasure from certain activities is just about how bodies work.

Who you’re attracted to matters: You’re gay if you’re a man attracted to men, lesbian if you’re a woman attracted to women, bisexual if you’re attracted to multiple genders, etc. The specific sexual acts you enjoy don’t change this.

Many straight people enjoy anal: Plenty of heterosexual couples incorporate anal play into their sex lives. Many straight men enjoy prostate stimulation, whether with a partner or solo.

Sexuality is about attraction: What matters for orientation is who you want to be with, not what you want to do with them.
If you’re questioning your sexual orientation more broadly (beyond just this one preference), that’s a different conversation about who you find yourself attracted to emotionally and physically—but enjoying a particular type of stimulation? That’s just about pleasure and anatomy, not orientation.

If you want to explore your anal pleasures, you could try anal sex toys, such as dildos or butt plugs and prostate massagers.