Log in to Admin Panel
Access your Magento 2 backend by logging in with your credentials.
Navigate to Content
In the left-hand menu, go to Content > Design > Configuration.
Select the Store View
On the Configuration page, you will see a list of your store views. Click on the Edit button next to the store view where you want to change the theme.
Change the Theme
In the Applied Theme section, use the dropdown to select your new theme.
Save the Changes
After selecting the theme, click the Save Configuration button in the upper-right corner.
Flush Cache
After saving, clear your cache by navigating to System > Tools > Cache Management, then select all caches and click Flush Magento Cache.
Your new theme should now be applied to your selected store view.
Let me know if you need further assistance!
Here's a step-by-step guide on how to change the theme in Magento 2 from the Admin panel (with a more conversational tone and a few tweaks):
Log in to Admin Panel
Start by logging into your Magento 2 backend with your admin credentials.
Navigate to Content
On the left menu, go to Content > Design > Configuration. This is where you can manage design settings for different store views.
Select the Store View
You’ll see a list of your store views on the Configuration page. Find the store view where you want to change the theme and click Edit.
Change the Theme
In the Applied Theme section, there’ll be a dropdown. Just pick your new theme from the options.
Save the Changes
After choosing the theme, click Save Configuration at the top-right corner to apply it.
Flush Cache
To see the changes, go to System > Tools > Cache Management. Select all caches and hit Flush Magento Cache.
Result
The new theme should now be applied to your store view. Refresh your site to check it out!