How likely is it that the Bird Flu (H5N1) will cause a lockdown like Covid?

Edit: Follow up question: how serious will this be if it goes human-to-human? I saw it has a 50% mortality rate, but is that because the sample size was so small? Will it be closer to seasonal flu in terms of how sick people get and the transmission rate or Covid-19/anything worse. I'm very anxious haha