I Clicker Trained My Dog To Fear Obeying Commands And Treats?

Help! I have a 9 month old Papillon and he’s extremely intelligent. I taught him the few commands that he knows in one training session each. He’s very bright and learns quickly.
I recently got a clicker to train him further. However, after only using it about 4 times (meaning 4 clicks) he got scared of the sound and therefore the treat that followed! Now if I tell him to sit or do anything he’s hesitant because he is scared that a loud sound will follow.
I’ve never used treats as a reward for him before- only toys. The toys have worked very well. Is there hope for clicker training him? I know it’s a very effective training method so I’d like to make it work.

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