Failed at sharing the gospel

I recently had scenario where I could spread the gospel and I didn’t. Has anyone else experienced this?

Tonight as I was walking in my city with my bf I saw this homeless person and approached him to give him money. We both stopped and started talking to him and asked how his day was going. It sort of went downhill from there as he told us he had a brain tumour and was basically dying.. he said he was so afraid of the thought of going. This is where I thought It was an opportunity to tell him the gospel but honestly I couldn’t say anything in that moment I really wanted to but I was honestly sweating at the thought. Also the guy was definitely under the influence of alcohol and was quite loud with us so I was a bit scared he would react if I did bring up Jesus. Anyways, we did listen to him and have a nice conversation. but after this I can’t stop thinking about it and how awful I feel, just knowing I could of done something and didn’t I feel like such a coward.