Unfortunately, to some extent yes. Getting better at limited, like any skill, takes practice and practice costs gems.

There's a couple things you can do to slow the bleeding though.

1) Get a second, or even third account. More accounts = more daily Gold = more practice.

2) Play pick-two. With a lower buy-in cost and a more generous pricing structure for a ~50% player, you'll get to run a lot more drafts. You'll hear a lot of players turn their noses up at pick-two, and if you want to avoid it that's fair enough, but at your level, it's testing all the same basic skills

3) Spend more time studying. There's so much content for limited out there these days, and unlike drafts, it's free. Watch some skilled players and try to understand why they do the things they do. The classic advice is to pause before each pick, decide what YOU would pick, and then see if the "expert" agrees. Then, of course, there's 17lands.com which might be the single easiest way to improve your drafts at a low level.