How hard is it to get out of an avalanche?

I'm genuinely curious, how challenging is it to escape an avalanche? It seems like such a treacherous and unpredictable natural phenomenon. Does it require specific skills or techniques? Are there any survival strategies one could employ? I've heard stories of people managing to get out alive, but I'm not sure how realistic those accounts are. Could you please elaborate on the difficulties and challenges associated with escaping an avalanche? It's a fascinating topic that I'd like to understand better.