No point in deleting friends. Yes you can network thru Facebook, Instagram, Twitter, Linkedin
But to be honest the real way to network is much simpler and harder to accept for most people. People think it's a fucking science and easy way to get to rich, hoping they strike gold by finding some old rich guy to give them an opportunity. This is the pussy way to go about it.
The real way to network is quite simply building a cool life for yourself. You can't network if you don't hold any value, whether that is money, knowing people with specific skillsets and being connected in your country, or valuable skills that you have, even just being an all-round funny guy. First you get those, build up your money, get to a point where you have $5-10k of free cashflow per month. Now you got something to show for yourself. Then build out your socials. Especially Twitter and Instagram. Post cool shit there, and don't be a sell out/shill trying to sell your shit. You'll fuck up your reputation immediately as you won't appear genuine.
Ofc tell people what u do and what u can help them with, but when u start u can't sell anything or ure fucked.
I'd highly recommend getting into the based/online biz area on twitter. Follow accounts like @yourealazyfvck, @dejaru22, @cardinalmason, can start with these guys and find other people there - I'm currently networking myself with these guys. And ull learn a lot from these type of accounts as well.
Additionally, back to socials, go out, show you're a cool guy and a G on the come up, and people will start flocking to u.
Long rant I went on but this is my opinion that I've made about "networking". It's quite a lot of stuff to do, but if u genuinely want to be successful in life not just in business this stuff is pretty important. Start slow, get money and work ur way up. And going back to sales, a lot of these guys that u build connections with can hook u up with companies & agencies that are looking for closers and salespeople. Good luck bro