I explored missions and did a whole course on it but basically what they told us is that you need lots of money, which the missions board will dole out to you, insurance, and often you will end up just looking after the children of missionaries who are all privately schooled and not actually reaching out to the people of the country you are going.
One of the ladies at church lived in india as part of a missions team and never actually reached out to any indians there. I was like so did you tell others the gospel and have many people convert. And she said no not one. ?! I thought maybe she would have amzaing testimonies of people coming to Christ but she didnt even talk or live amongst any people who were not already christians just her own compound. How can you live like that and say thats mission and just not spread the gospel. . I dont understand that, but thats what happens.
And people on missions boards usually just want people to do admin and send money. Not saying admin isnt important but keeping accounts am not sure that really qualifies as reaching out. Its actually easy to send money, or work for other christians in their own worlds but harder to go yourself and care and be with the people who arent christians. Cos how can they even relate to you if you dont really experience what they experience? I could be wrong though, maybe being a nanny or cook or gardener to privelighed christians childrens overseas is mission...?