I have low BP, although it is rising with age. When I was in my 20s, 83/58 would have been pretty normal for me. Now, 20 years later, I am generally around 105/65 or thereabouts, and occasionally as high as 115/75 which feels high to me because of what I am used to.
Do you have a family history of hypotension? My mum, granny and granda were all the same, and I seem to have passed it on to all my DC. 2 of whom are sometimes symptomatic.
I have always been told that unless you are symptomatic then it’s not a problem. If you are symptomatic (fainting, blacking out, collapsing etc) then you need to identify your triggers (often standing up quickly, standing still for long periods of time, bending over (linked to positional vertigo) or high heat), and work to avoid them. Often if you also have low blood sugar (not diabetic - just that you haven’t eaten properly) - it can exacerbate it. For me, if I know I’m going to be on my feet for a long time, or in high heat, I carry a salty snack with me, and a sugary drink.
If I (or my DC) do faint then it’s flat on the floor, cool down as much as possible, legs raised and small sips of cold water until it returns to normal.
Hypotension is much more preferable to hypertension, although can be a pain in the ass when on holiday and your DC start fainting left, right and centre!