I play regularly and I'm fucking terrible so fair warning
You might be playing as a hard to use champion/s. If you're getting smashed try champions that are really easy and build tanky. I think Garen gets played alot for this reason.
I've found lvl30 not too bad at all, but you're still a good chance of getting a shithead or two every game. Can't say I'm a fan of some of the changes of this new build, particulary with reguards to lifesteal. But the new items are fun.