I bought this crate but I’m not sure if it’s big enough. Seems kinda tight.
It’s just for when we leave the house.What are using the crate for? If it's for house-training, it's too big. Your dog should be able to turn around and stand up, but nothing more.
If it's to keep your dog, and household, safe when you're not home, it's probably fine. He's likely to mostly sleep in there.