Wtf do you mean risk free? Sorry to use hard language but just know that there are many people who lose their money. I’ve had bad experience with binance launchpad that I do not participate in it anymore. And even if I will, a super tiny amount will do. Any crypto listed on Binance launchpad is normally so volatile and needs a lot of caution. I’m happy for you as you’ve been making profits, but please don’t think it’s risk-free money. Be very careful when investing and only what you can afford to lose should be invested.
What risks are there? Please elaborate! Under the assumption that you are anyway invested in BNB on Binance, there is zero risk in participating in a launchpool. It's literally free money you get. In the case of a launchpad, you have a small risk during the calculation period where your BNB is locked for a few hours, but that's it. The BNB you pay for the new coins in a launchpad event are a fraction of the value of the coins you get, and since there is no lock-up period, you can immediately monetize the difference. So that's as much of a risk-free opportunity as you will ever get!