'Hololens gen 1 with unity 2020 and MRTK

I'm trying to develop a simple application which has simple cube in it for hololens gen 1 through unity 2020.3.26f1 with Mixed reality tool kit and deploy the application through visual studio 2022 (tried in 2019 too) it works in preview without any errors but with some warnings and visual studio builds the application wihout any errors and deploys to hololens gen 1 but in the hololens i am only seeing a empty tab opening with my application name on it on the side and doesn't even show "Made with unity logo" I tried accessing the document which is too old for the newer version of unity. Am i doing somehing wrong i follwed so many hololens 2 tutorials because no one posted a article or a video for a hololens gen 1 after 2016/2017 but made it till here.

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Solution 1:[1]

Unity 2020 does not support targeting HoloLens (1st gen). These headsets remain supported in Unity 2019 LTS with Legacy Built-in XR for the full lifecycle of Unity 2019 LTS through mid-2022. For more information please see: Choosing a Unity version and XR plugin

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Hernando - MSFT