Is diet injection a treatment that even beginners can receive without feeling burdened?

I've resolved to go on a diet several times already, but I always give up after three days, so this time I want to do it properly haha.

So I've signed up for a workout and am gradually changing my diet, but people around me recommended that I combine it with weight loss injections.

However, since I have almost never received dermatological care or treatments like this, I am a little hesitant to start diet injections for the first time.

Were those who received it for the first time also very nervous? I am also curious if the procedure itself finishes quickly and how much pain it caused.

I also want to know if my appetite decreases immediately after getting the diet injections, or if I need to receive them a few times to feel a change in my body.

There are both good and worrying reviews online, so it's making me hesitate even more haha.

My goal is to lose weight steadily and healthily rather than just losing a lot of weight, so I am wondering if this method is suitable for someone like me who is just starting out.

I would like to make my decision after hearing from those who have actually tried diet injections for the first time. Please let me know if there were any aspects you were satisfied with or if anything differed from your expectations. Thank you!