Thank you for writing to us with your important question and important issues.
We are certainly very impressed with the work you describe in Cameroon, and it seems as though many positive things are happening.
Naturally, we hope you can obtain adequate funding for your work; and we can understand the desire to seek international funding, over and above what the government of Cameroon might provide.
In seeking any funding, of course, your proposal needs to fit well with the needs and criteria of your funding agency. Since in your case, we are not sure which international agencies you are talking about, it is hard for us to be more specific. You should certainly investigate the guidelines of those agencies, and ideally begin to develop personal relationships with people who work within them.
So when you write a proposal, a good question to keep in mind is “How you I design a proposal that they can see as meeting their needs, as well as my own?” That is, you want to be able to look at your work from their point of view, not just yours.
We hope some of these thoughts may be helpful to you. Thanks again for writing, and all very best wishes for success in your work.