Is something wrong with my minecraft?

I've been going for miles in the game, and the only biomes that are generating are savanna, plains, ocean, desert, and I saw one flower forest but that was a long time ago. Is this some kind of glitch? I traveled a lot. I have no mods installed and my game is up to date.

The worlds that generate when you create them are random, and do not always have all terrains. You will have to create a new world, maybe a couple of times to get what you want.

However, the flower forest may be a mod… I know there are flowers, but I'm not sure what a flower forest looks like.

Just got unlucky on the world generation, sorry.