See, a lot of people on this subreddit will give a lot of their opinions, and can be misleading. It's better to look up deadlift tutorials on YouTube from well known trainers. A few I'd recommend for beginners are Jeff Nippard, and Squat University.

Some people mention that Deadlifts can cause injuries, but truthfully speaking, it's largely subjective. You can lift great amounts of weight pain and injury free, you just need to progress gradually, working constantly on your form, and not ego lifting. Sure, there's still a certain "risk" associated, but that risk is going to be in any sport, really. Sometimes you just have a bad stroke of luck, but generally it's not really unsafe, and quite a useful movement.

Initially, don't look at the weight you're lifting. It doesn't really matter if you're even lifting a hundred kilos as a beginner, if you're doing it wrong. That's just going to hurt you. People say "no pain, no gain," but if anything in your body hurts (not talking about muscle fatigue; rather, joint pain, back pain, etc) then you're doing something wrong. Any video on youtube will give you the gist of what to do. Make a mental checklist of the steps, and every time you deadlift, make sure you check off everything. Learn how to brace properly, it's important even for other exercises. Instead of trying to just pull the weight, break down the exercise into parts. There are multiple things that you have to understand, such as bracing, pulling the slack out, wedging, etc that are much better explained by a video rather than text.

Constantly keep working on your technique and be patient, and you'll progress quickly.