It's definitely something that can be trained and improved with practice. The brain needs to switch from thinking "Is this a situation where I can actually help? Do they need help? What if I mess up? What if it's a scam?, etc." to "I'm helping, how do I help?". It's easy to freeze and let the opportunity to help pass by, but once you start it's much easier to continue.
I remember an interview from an old LARP camp director (Brennan Lee Mulligan, although I forget if it was his podcast or another one) who recalled the nurses helping out at the camp saying LARP was surprisingly good training for first responders because it gives kids practice with running towards the people who need help instead of away from potential dangers.
I remember an interview from an old LARP camp director (Brennan Lee Mulligan, although I forget if it was his podcast or another one) who recalled the nurses helping out at the camp saying LARP was surprisingly good training for first responders because it gives kids practice with running towards the people who need help instead of away from potential dangers.