How to change theme of existing site without loosing content?

Hi, recently I got a News anchor pro theme. I am doubtful that If I change the theme of this site https://weldingjudge.com/best-tig-welder-for-beginners/ is it safe because I’ve uploaded much content on it. What should I need to for not losing its content?

Thanks

Hello,

I would suggest you to create a staging site for development and troubleshooting purposes.

Here is a detailed tutorial:

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.
aThemes Support