If you want to delete or uninstall the WordPress Theme. Here is step-by-step information for you.
Go to your dashboard ➜ plugins ➜ click add new ➜ search plugin input
Type in search plugin input wp reset ➜ click on install now ➜ click on active
Then,
Go to plugins ➜ installed plugins
Find your wp reset plugin which you downloaded.
After finding open wp reset tools.
Then, find site reset drop-down menu
In the input box type in “reset” ➜ click reset site
Go to the directory and open your Theme’s folder.
And then go to wp-content and open the plugins folder.
By default plugins like akismet plugin and by default php file like hello.php, index.php, delete all plugins except that.
Go 1 step back to the plugins folder.
Go to the Themes folder and delete the folder of the theme you want to uninstall.
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