My 3-year-old frenchie loses his mind barking every time the doorbell rings. I yell at him to stop but he doesn't listen. It's embarrassing when we have guests.

Yelling is noise. He hears the doorbell, he barks, you bark back — from his perspective you're joining him. You're reinforcing it. Here's the protocol. Disconnect your actual doorbell for now. Get a recording of a doorbell sound on your phone. Play it at low volume. The moment he alerts (even just looks toward the door), mark it with 'yes' and give him a treat before he barks. Repeat 20 times. Gradually increase the volume across a week. You're building a new association: doorbell sound → look at me for a reward, not bark at the door. Once he's reliably turning to you at full volume, add distance. Then add the real doorbell. This takes 3-4 weeks of daily reps. If you skip the low-volume foundation and go straight to the real doorbell, he'll bark because the trigger is too strong. Most people try to punish the bark instead of rewarding the alternative. That doesn't work. You're not suppressing the behavior — you're teaching him what to do instead.