How Do I Mirror My iPad To My Mac?

I am trying to mirror my iPad to my MacBook Pro 2013. I can’t use Sidecar as it is not compatible.
I am trying to mirror my iPad to my MacBook, as I am a teacher and I want to walk in the classroom, using my iPad while its screen is projected onto my MacBook. I have tried several apps, but none seem to work fine. Only airbeam.tv works with Google Chrome, though unstable.
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Visi