Disable large media

I would like to disable large media for my site: https://iamamandamartikainen.com/
Please let me know how I should proceed.

Thanks for letting us know you want to uninstall the Large Media add-on for your site. Would you please confirm you have read the following Support Guide?

If you have read that, please confirm you have backups of all files and that we should proceed with removing the Large Media add-on.