Why My Bounce Rate is so High ?

I have noticed my bounce rate is 40%, Can anyone explain what is bounce rate? Is it normal to have a bounce rate of 40%

Thanks & Regards

Since the bounce rate is the percentage of visitors who only view one page on your site , it’s calculated by dividing the total number of single one-page visits by the total number of visitors.

Is 80% bounce rate good?

However, if you’re looking for a ballpark figure to start with, a bounce rate of around 70-80 percent is cause for concern unless there’s a very good reason for it. Between 50 and 70 percent is about average. And if you’re between 30 and 50 percent, your bounce rate is considered excellent.