It's normal to have little to no desire to jump head-first into a committed relationship right after you've exited one, and there's no reason to rush. The casual dating scene is still alive and well. As long as you communicate your stance to those you intend to date, there is nothing wrong with staying away from anything too serious. Casual dating is a great way to meet new people, explore your desires, and consider your options.
With this in mind, avoid potential partners who try to twist your arm into forming a commitment after you've communicated how you feel. Sure, it can be flattering to know that someone doesn't want you to slip through their fingers, but the desire for exclusivity should be completely mutual. If that relationship is meant to be, the opportunity will still be there when the time is right. In the meantime, don't let coercion disguised as eagerness and devotion cloud your judgment.
It's possible you'll meet people who are looking for something serious — and that's fine. However, they should find someone who has that same goal. Issues can arise when you've stated that you're seeking something casual, and their first instinct is to convince you to conform to their desires. The people you date should listen to how you feel and take you seriously.