When Turning Down An Invitation messages in a Gentle tone

I’ll skip this one, but keep me in mind for next time.

I’ll pass this time—hope it goes well.

I’m going to skip this one, but hope it’s a great time.

I appreciate it, but I’ll have to pass.

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

I appreciate it, but I’ll have to pass this time.

I’ll have to pass, but hope you have a great time.

I’m not free, but I really appreciate the invite.