Question) Concerns about blood pressure...

I designate one hospital each year to undergo a health check-up.
I have been so healthy that I haven't even needed a check-up until now, but I have one concern.
First, among the physical changes, the most rapidly changed aspect over the past one or two years is weight.
I was overweight.

Since last year, I started exercising again, which I hadn't done before.
I have been consistently walking 10,000 steps every morning for about two years.

I asked the doctor about this, and he recommended walking 8,000 to 12,000 steps a day.
Walking results: I lost 6 kg of weight.
When I asked the doctor, he said that the body fat percentage has now improved to about 24.8%, which I interpret as a positive result from walking.

I'm curious about blood pressure.
They said that the initial blood pressure was a little low, so after completing other examinations, they would recheck it.
Second Jenny 102 has come out.

They say it's normal, but I'm a bit curious about the blood pressure standards.

Is a blood pressure of 102~~ normal?

With school knowledge, it's age + 80, so it should be around 125 to 130.
Some people worry about their high blood pressure and manage it by taking medication, but I have a slightly lower reading of 102. Should I be happy or should I be concerned? I'm not sure. I have a question.

The photo below is a chart illustrating information related to blood pressure.

I understand that below 90 is considered hypotension, and below 120 is normal... 120, 140... all are correct.

Is it suspicious that the normal range is from 90 to 119..?

Is there no correction value based on age?

I'm unsure and curious about which range a blood pressure reading of 102 falls into.

You know the person, so you might say, "Why are you posting something like this?" but if you're not familiar, it's a difficult field~~