I did 15-20 after a steering line was caught on the wingtip, I had the bar out the whole time and after the first few meters I was on my stomach.

Just pure luck I didn't hit anything solid or anyone else.
Just before my launch it felt a bit wrong, the kite was pushing so I'd step back downwind and so forth.
I'd passed through the noob stage where my mind was on my quick release and falsely thought I could handle any situation.
Whenever my spider sense starts tingling nowadays my hand is a split second from the QR.
Always be ultra cautious if your launcher flips your kite as a line or bridles can get caught on tips and struts so be double sure everything's right.
Never wing it, especially if you have other objects or people downwind of you.
If someone comes and gives you some advice when you are launching suck it up as they are trying to help you and protect the local (yours and theirs) spot.
I've gently approached a few people about to do ****ty launches and most of them are like zombies totally fixated on the goal and won't listen to advice.
As a noob, the people at your local can be a great resource to get you out and having fun, a bit of humility will get you a long way.