@Zeeshan Bute, Thanks for posting in Q&A. Based on my researching, I find Opera has a game-oriented version of the Browser, Opera GX,. Based on my checking, under Microsoft Store new app, there's this app, you can deploy via this app type in Intune.
If you want to deploy other version which is not in Microsoft Store (new)., you can firstly confirm with Opera support to see if they have silently install command which can install it without user interaction. If yes, you can consider deploying it via win32 app type.
https://learn.microsoft.com/en-us/mem/intune/apps/apps-win32-add
Meanwhile, to manage Opera browser, after researching, I find currently there's no device configuration for Opera browser now. You can feedback to Opera developer to see if we can have this in the future.
Hope the above information can help.
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