I recommend that before using an AUR helper, you should familiarize yourself with the process by cloning, reading the files, compiling, and installing manually. Then after you think you are good you can install a helper. I use yay.
Also, sometimes pacman itself gets updated and your AUR helper doesn’t work anymore. When that happens you have to update or recompile your helper manually. If you are not familiar with the process it can be difficult. I’m talking from experience, one day after an update my helper didn’t work and I didn’t remember how to do all the process manually, and I had to re read the wiki again.
Some decades ago when I was still an engineering student, my team had to present an electronic assignment. The damn circuit didn’t work, no matter what I did. So I decided to go ask the teacher for advice. I walked away a couple of meters, when my teammates told me that the circuit finally started working. As soon as I went back, it failed again. We soon determined that it failed only when I was near it. My teammates presented the assignment while I was at the other side of the lab. We passed the assignment, and sure enough, when I approached again to pick up my things, the damn circuit stopped working again.