It would be wonderful if 100% of the people in your church immediately became totally involved in evangelism. But that just won’t happen. Instead of being discouraged by that, take another approach. Start small and build. Celebrate the small wins.
The ultimate goal is for everyone to do evangelism. But in the mean time, why not find one other person and train them? Enthuse them? Encourage them. Equip them. If you can get one other person with your vision and passion for reaching the lost, you have just doubled your efforts. Then start to work with someone else.
Walk before you run.