How to remove Recent Posts, Archives, Categories etc

Please provide the valid site URL.
Thanks

https://somaticpsychotherapybrisbane.com/

I am so sorry, i can’t get you question. Category, archives are on sidebar and you want to remove it from there? If so Go to Appearance > Widget > And remove the widget from Sidebar.
Try once and if not work let me know.
Thanks

I’ve gone to Appearance > Widget > And remove the widget from “primary widget area”…. I couldn’t find a “Sidebar” section.

After doing that most have them have gone leaving only “search” “categories” and “archive” – even though I deleted them from the above

Essentially i want the page full width without the right hand column.

Thanks for your help.

https://www.brisbanetraumacounselling.com/contact-us/