Placements do not reflect your actual skill level. I'm honestly a bit surprised by how many people haven't realized this yet. The sample size for your actual placement is far too small and is based on your performance against typically lower tier opponents, especially this early in the season when everyone is trying to get their placements done.
Your actual, deserved ranking develops over the course of the season, as it should. Besides that, It only sets people up for failure if they are automatically placed exactly where they belong, because then it is harder to recover from losses and you will likely fall in rank and skill rather than improve.
Getting placed in Bronze 1 isn't as bad as it seems. All you need is one promo series and you're back in your division from last year. I wouldn't be surprised that if I searched you on op.gg in June or July to find you knocking on the door for Gold (or be Gold by that point even). Keep your head down and grind it out, you'll get there.