You can practice copybooks. Be sure to start with block letters and recommend Si Mayan's copybook. Copy it first, but don't keep coming. This is just a feeling of looking for them in the early stage. When your font changes, you should change it to imitation. You should completely abandon your "crooked words" and carefully observe the examples of every stroke and painting on the copybook. Imitation is very difficult, especially at the beginning, you will find how ugly your writing is and always want to go back and copy it. This is absolutely impossible. Although your own imitation may not look good, your writing habits have changed unconsciously in the process of carefully observing the imitation paradigm. Therefore, although imitation is very frustrating, it is the most effective way to improve your writing style quickly. You can even give up copying and copy directly.
Generally speaking, practicing calligraphy does not form conditional writing through unconscious copying, but through careful analysis and thinking of the shelf structure of example fonts, I get my own understanding of the beauty of writing.
I hope I can help you.