I'm in a similar boat, it's intensely hard, but it's definitely possible to just muscle through it
the longer you go without fapping the more willpower you have, and the more willpower you have the easier it is to abstain, at least until the end of the first week
after about 7 days your testosterone levels spike like crazy, which will send both your energy and your sex drive through the roof
IMO this is the hardest part, and once you get over this hurdle you're pretty much home free as long as you maintain discipline
definitely get a meaningful hobby
nothing wrong with playing videogames, as long as you don't go for more than 2 hours a day or so, but it's absolutely not something that will give you real satisfaction
if you're really into that sort of thing, download Unity or something and make your own, it's easier than you might think
personally I take a really intense martial arts class, even if I've been wrestling my urges all day I'll be calmed down and clearheaded after an hour of it