What you are doing in ministry is 100% experimental no matter what you may say to the contrary. I’ve been doing outreach for decades and I am more philosophical now than ever. I can see clearly that it’s all practice.
Sometimes our evangelism outings go phenomenally well. Those times seem to be anointed as if Jesus Himself was leading things. At those times the Holy Spirit seems to oversee even the minute details. Then there are the other times—when chaos reigns. From the outside, it is difficult to discern the difference between these two outreaches. In each case, plans were carefully made. Both were bathed in prayer. There seemed to be an equal amount of sincerity on the parts of the leaders.
To our eyes, there are vastly different results from these two outreaches. One seems blessed while the other seems like a wash. One seems like an answer to prayer and the other is what most would consider spiritual warfare.
God is at work in the calm of answered prayer AND he is at work in the chaotic settings that drives us batty. It is difficult to weigh our surface responses too heavily. God just might be at work in the negative one even though you are not all that happy with the result. Don’t rush to judgment. He is up to something amazing no matter how you feel.