As I understand it, The OT follows the lineage and trials and triumphs of the Israelites.
The NT is a correction from how they were about to go off a cliff, and turn them to a better way.
At the same time including into that fold of people, all the other peoples (gentiles) of the world.
The OT was to be used as a guide, how one people were to be an example to the rest of the world.
We see how and where they failed and where they excelled. And the bible uses their history as the rest of the world's teacher of what to do and not do. What God approves of and what he doesn't
I think if Israel did everything 100% wrong, then the NT would have been much longer.
But I also see the NT as an overlay of the OT.
It shows us what they were missing and what was still needed to be "perfected" .
Through disobedience and bad behavior, they just kept heaping more burdens upon themselves.
The NT is a new start. Leave your burdens here at the door. You messed up. Your not perfect.
Jesus is the example all people should follow. Jesus is what Israel should have been, if Israel had put God first and let him lead them.
So I believe God came in the flesh and he called himself Jesus to be the example he wanted his children to follow.
In the NT God is more concerned about the perfection of your heart than the perfection of ritualistic services.
There are a lot of lessons in the OT we are still learning. But everything we need to learn is in it.
We just need to apply the tools (Holy Spirit) of the NT to understand the OT and how they missed the mark.
Just my 2 cents.
I hope your day has more yes's than no's.

Hugs