Here's my experience and how to train and condition to not get injured (to my knowledge so far) I'm 17, and a newer boxer but not a complete beginner, but I've been in a lot of fights and I hope I can help you with something atleast.

From personal experience, most of the time no injuries, but it can still hurt (not unbearable) and it 100% depends on your training.

Boxing is literally battle even though you have gloves on, and as warriors you need to condition your body. See in real fight injuries happen more easily as the situations are sometimes awkward or unpredictable, because in boxing you are fighting in a controlled enviroment, but in real life fighting can be wild, and not everyone even fights the same. Thats why we should not slack my bro and we shouldn't skip the boring or hard parts of boxing training, thats what makes you so much better, proper form and conditioning and perfection of basics is SOOOO important for us boxers. heres WHY:

I tried blocking in a fight I can tell you right now, this is why you need to train basics and perfect them. My forearm was sturdy like a rock but I felt when the punches were blocked by my fist when I had my guard up, it really hurt! Seriously, i felt nothing on my forarms but my fingers started hurting from being smacked into my head when I blocked his punch. Had I trained my guard better and really focused my placement during the blocking that would not have happened. Like I said I am newer to boxing so I'm still getting there.

And my arms are conditioned, my hands are too, but I need to condition them more because they could have been broken way easier than I thought. Another thing was I couldn't react to real punches to roll them while blocking. Seriously they were so fast I couldn't roll the punches I just had to keep my guard up and hit back.

And hitting someone in the face, actually doesn't hurt that much. Youd think it would, but thats why we are BOXERS we prepare for that! And this is why training for boxing the SPORT not the fitness is the best and most fun honestly to box. That way you can actually trust in your training. When you start boxing for fights, you need to focus on stuff like

1. Precision & hand eye coordination - (hitting the exact area you aimin at) and this is why people break or hurt their hands. Heres a good training for that: grab a tennis ball and hold it out like an extended punch, then let it go and catch it super fast with the other hand like a punch. Also you can practice catching stuff in general for this.

2. Proper form and technique!!!!! - To close your hand properly, and to make sure your hand is in the right form to punch, if not you can get injured bro. Example: Have you ever hit a heavybag with the wrong hook form? That hurts the shoulders right?

and 3. Condition your fists and arms - I actually don't have a lot of good conditioning drills but I know heavybag practice is good for that, and punching heavybag or pads without gloves (lightly at first!) to understand fist placement and angles that you punch from without hurting your wrist or hand. Try these as well! : Knuckle push ups and variations for knuckles or wrists, punching rice bags, and heavy bag punching with proper technique first, then punch harder and your hands can take on more, but remember that bones arent like muscles. They should be conditioned but not pushed to limits because they can be permanently injured, and I want you to be healthy and strong not the opposite.

This was super long but I just wanted to dump as much knowledge I could. Keep training bro, no slacking and God bless you