I remember when I was a child, I wrote the big Tian Zige with a pencil for the first time. Later, when I grew up, I wrote smaller squares with a pen.
Actually, I prefer to write with a pencil. The words written in pencil feel not only powerful, but also very infectious.
The line thickness of handwriting can be flexibly grasped. But it may also be because of this that it may be difficult to master writing smaller words.
As for the pen, the teacher said when teaching calligraphy that you can use the pen dipped in water, so that the lines can be slightly changed.
If you think the pen doesn't work well, you can use a ballpoint pen instead.
If you really want to write well, I suggest you practice calligraphy.
When the brush is written, the hard pen will be written naturally.