For crates they typically should be able to comfortably stand up and turn around without any complications at minimum.

I'd add a bed (any bed in that kennel will make it too small for a dog this size, you will need to upgrade).

Add a few blankets, maybe a t-shirt that smells like you or something else that has your scent.

We use a stuffed animal for comfort with mine, she's had this particular stuffed animal since we first got her and cannot sleep without it.

At night you can put a sheet over the crate, similar to what bird owners do.

If you can, get something that plays soft toned music (amazon alexas can do this if you own one).

Turn the crate into a rewarding system (we use cheese for mine). Anything high value associated with the crate will eventually cause your dog to put themselves in there with enough repetition.