Start with those who know you best. Maybe you could create a position at your current church. Knowing them well, see a need and address the “pain” the church is feeling. Develop creative solutions for your current pastor to hire you.
Initially, your church may say they don’t have the money but you could spend time giving them options on how to do it. Make a proposal. All they could do is say no
Ever thought of starting a blog and begin posting messages and lesson writing as if you are pastor? Do a video blog with a brief devotion thought. Work hard on promoting it as you are developing a portfolio
Be like a missionary and raise your own funds. Serve at the church and have your donors pay your salary. They get a tax deduction and you are able to get paid