You can actually offer campaign manager service since they are somewhat similar in doing admin task in VA just invest more time reading on the forum and gathering knowledge on what a campaign manager does. Also, build your portfolio on what things you're able to do.
If OP focuses only on what it takes to be a campaign manager on the forum, then i don't think they would ever be one. There is so much competition amongst campaign managers, and only the best and highly reputable would be hired. Op should rather focus on being a good user of the forum and not a campaign manager, i don't think any campaign manager in the forum joined because they wanted to be one, i am sure they joined to use the forum like every other member, but along the line they developed reputation here and desired to offer their services as a manager.
Campaign management isn't probably the best skill for the OP, we have seen managers lose campaign funds, another case happened recently, but i won't link it here. Being a campaign manager requires the person to be careful and attentive to security, but OP doesn't seem to be that, according to his story it was very easy for his roommate to access his PC and steal his coins, that isn't a good trait of someone who is going to handle thousands of Dollars for numerous campaigns if they ever become a campaign manager.