I personally love anal… But, what you're feeling is completely normal! No need to feel like you're a bad gay or as if there's something wrong. Lots and lots of gays are not into anal sex at all, and I know plenty of people who are in very serious long-term relationships and who never have anal.
After all, anal sex is only one of many ways to have sex. It's quite annoying how gay commmunity often expects people to be either top, bottom or vers. When it just doens't apply to so many people.
My advice to you would be to simply be open about that you're not into anal sex from the start. Especially if you use dating apps or similar. It will probably save you lots of trouble, and it might even attract guys who feel exactly like you