When Turning Down An Invitation messages in a Friendly tone

I’m going to pass this time, but thank you.

I’m not able to make it, but hope it’s a great time.

I’d love to, but I already have plans. Let’s catch another time.

I’d love to, just not this time.

I appreciate you thinking of me, but I’ll have to pass.

I’d love to, just not this time around.

That sounds like fun, but I won’t be able to join.

I’d love to another time—just not this one.