What to do when your lane is lost?

Imagine you're bronze IV, and it's still early game, but you've been paired against a plat II smurf and you're getting cannibalized. Since your laner is fed, your jg probably wont gank for you. You can't cs because (a) they are better at controlling the minion waves and will just keep their waves on their side of the rift, and/or (b) you'll have to overextend to cs causing the smurf to kill you, -tee'd. The suggestion is to stay under tower, but doing that loses so much cs unless the wave is right under your tower, and thats assuming you know how to cs under tower (which I do), and EVEN THEN caster minions are prime baits to kill you. Of course you could roam and try to snag an assisted kill, but the smart enemy laner will probably push that lane and damage your tower while you're gone, so if you get nothing done you've failed in more ways than you already have. What is the suggested course of action? Gold income item?

TL;DR, feed the enemy with your deaths trying to cs, or feed the enemy by not contesting cs AND failing to aquire cs by hiding under the tower. IS THERE A WAY OUT?? Is this where one may consider buying a gold income item or something??