High bounce rate isn't necessarily a bad thing. They might be finding the information they need and leaving the site.
This is always a hard one to answer.. I agree with trader4life, try to limit the amount of information to your viewers.
-When building backlinks do not use unrelated anchor texts -Do not stuff pages with unrelated keywords. -Try to add more content and videos to keep users within the site. -Use correct meta description to explain the web page. -Try to satisfy different user intentions. Eg: transaction, information