Assalam o allaikum.
Actually, there are these two hadiths that contradict each other;
Dawud :: Book 34 : Hadith 4210. Narrated Abdullah ibn Mas'ud:
The Prophet of Allah (peace_be_upon_him) disliked ten things: Yellow
coloring, meaning khaluq, dyeing grey hair, trailing the lower
garment, wearing a gold signet-ring, a woman decking herself before
people who ...
Like @Dyshoreh mentioned, there is nowhere in the Qur'an or Hadith that explicitly states it's haram for a male to shave their legs; however, it will come off as a thing women generally do, not men. Muhammad (saws) forbade men from imitating women, so it's best you don't shave your legs but even if you do, it won't be haram per se.
Imagine ladies have much more longer hair. All you have to do is put water three times on head and if you stand under shower 3 times for like 10 seconds each time; rubbing hair with fingers this will be done wetness will definitely reach roots of hair. From your description it feels you are over thinking and amount of effort mentioned above is sufficient.