If I lose my visa on the first attempt, can I apply again if there are rejection or refusal slots available soon after?

Yes, you can apply again for a U.S. student visa soon after a refusal, as long as interview slots are available. There is no mandatory waiting period before reapplying.

However, you should address the reasons for your previous visa refusal in your new application to improve your chances. Reapplying without changes or new evidence is unlikely to help.