I do not have any answers. God has the answers! He has called you to be where you are for a very specific reason. I want to encourage you. You are there by His appointment. He is using you, and He will use you in the future.
Be faithfull in the rain, be faithful through the drought. I can guarantee that only the Lord will cause a seed to grow. we may sow a million seeds in a years, but not one will grow untill the Lord says "GROW"
Hang on and don't hang it up. Let me give you an example from my life.
I taught Senior High Sunday School for thirteen years. I always came prepared, I spent a lot of time praying for them and God to impact their lives. I sweated, I struggled, I fought. It seemed all to no avail. I could not see anywhere in anyones life I had poured myself into any significant turn toward God. I quit teaching when I was called into the youth ministry at another church.
I found out later that a few students from my class accepted Christ as their Lord and Savior. It didn't happen while I was there, but they all attribute it to the Lord and my being their SS teacher.
I am not bragging about my ability, but encourageing you to realize that God is moving and working especially when we cannot see Him at all. He grows the seeds.
My friend, my brother in Christ and service, just sow the seed. Scatter it as much as you possibly can, and pray that He grows a great crop. That is all you can do.
He is working
He is active
You are not alone
He will use you