Learn some of those phrases, and use them to have some fun. Don’t do it all the time though. Just mix and match in a tasteful way. You can also mess around with dialects. Just don’t overdo it, because it can get distasteful very easily.

Ideally, you would find the expressions you consider useful or interesting, and start using them occasionally. For example, the Aussie style “No worries” is pretty good IMO.