As beginners in learning Korean and their alphabet 한글, a lot of us struggle with the curse of blocky handwriting. There's no shame in it though, all of us have it at one point - even native Koreans! This is most probably due to the block structure of the writing system. However, as in any language - the more we practice the more we get lazy with our handwriting and we also adopt the letters to fit our writing flow better!
Have you been learning Korean or teaching yourself for a while? Many people are learning Korean but are you sure you're learning the right way? I'm a non-Korean speaker but I speak fluently four languages - Italian, English, German and Spanish - so I can definitely say that I've tried a lot of methods to learn them. I'm going to tell you how and how not to learn languages but in particular Korean.