Did you assume that a bounce rate is the amount of time a visitor spends on a website before it ‘bounce’ back to another site?
If yes, then you are wrong.
Get to the root of the problem.
There could be many reasons for high bounce rate including problems stemming from internal, external, consumer or marketing actions.
You can take help from Google analytics to make some improvements.
You can also consider reviewing your site by your employees or friends and get better recommendations.