Venting About Blood Pressure Issues

Heyyy just wanna vent a bit I've been having blood pressure issues (that I've had for a while now) despite my diet of "more salt, more water", etc. and I just had to walk quite a bit (I usually use a wheelchair due to other disabilities) and my feet are BLAZING. Like they're not hurting, but they're so incredibly hot, I've nearly passed out twice today, I've been really lightheaded, and I'm just overall very sucky. And it sucks to have people tell me to just eat more salt and drink more water because I'm sorry, either I'm severely deprived of both of those things (+ more, and I'm not, I do everything recommended consistently) or everyone does this and I just had no clue. Which apparently they don't or they wouldn't be telling me this??? Just annoys me to no end to have something happening that everyone plays off as down to me not doing everything right, when it's definitely not that and I'm in severe suckland for an unknown reason nobody cares about.