You take too much. Having 32 ng/ml is ideal.
Not true. Getting to 30 mg/ml(30-80 ng/ml is usually considered the normal range) does offer great protection compared to sub normal levels and several studies showing getting to 30 is greatly beneficial, but more recent studies show that getting to 50 ng/ml is ideal and makes one almost bulletproof against Covid and other infections and more.
You need to take a K2 supplement also(unless you are eating foods rich in K2 like natto) to make sure the calcium the vitamin D will increase goes to your bones and not your arterial walls.
The ideal range is 50-100