It's not a good idea installing other app due to security concern You can send messages and attachments with gmail's confidential mode to help protect sensitive information from unauthorized access I found alternative to install gmail app via chrome browser
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It work just like an app.
Gmail message recovery tool recover your emails that might have been deleted due to someone accessing your account without permission
Open gmail in chrome, and make sure you are signed into your account In the chrome menu, click the three vertical dots located at the top right corner Proceed to more tools and select create shortcut After you click create, you’ll see the shortcut on the start menu
Right click on it and choose pin to start. On your computer, go to gmail With the latest gmail app, you'll get Faster gmail better security new features, like email blocking and new formatting options tip
If you use an older version of gmail, the app may ask you to update before you can use it.
On your android phone or tablet, open the gmail app Download a photo from inside an email When gmail finds a known virus attached to an email that's been sent to you, gmail will reject the message and let the sender know If gmail finds a virus in an attachment on an email that's already in your inbox, you won't be able to download the attachment.
Open & download attachments in gmail when you get an email with an attachment, you can download the attachment to your device. To add your contacts to another email account, first download them as a csv or vcard file To clear up storage, export and then delete contacts you don't need Select one of the following
Check the box next to the contact name
Check the boxes next to all the contacts you want to export Check the box next to any.