Picking the wrong variety of grapes (or any fruit tree) not suited to the local minimum temperatures is a practical guarantee for disappointment. There are nuances, such as length of growing season, etc that will alter results of varieties technically rated for a certain climate zone, but generally it is winter kill or winter hardiness that governs success or failure in horticulture. Beta and Valiant are known as the hardiest improved grape varieties, originating in breeding programs in Minnesota and North Dakota if memory serves, selected crosses with wild North American grapes.
It might be that if wild grapes won’t survive in your area, neither will the cultivars. Wild grapes are a bit of an exotic here, found in river valleys in the south, although with the global warming of recent decades, perhaps local vegetation is no longer a reliable indication.
At least start with reliable stock. Both those varieties are old and common horticulture stock, widely available here for about $10. Once established they are easily propagated from dormant stem cuttings.
I have a feeling from observing your videos that grapes should be possible in your area, especially with the milder winter temperatures. I’m not as certain that there is enough summer heat for them to reliably bear fruit, but it’s a cheap experiment, and grapes grow quickly.
Even without the grapes you would have leaves to eat or pickle…