Ive been doing free training and education about Bitcoin and cryptocurrencies since 2018. Been roaming around the country using my own money for accommodation, travel expense and venue (thanks to the glory days of airdrops and bounties) to educate the uninformed and misinformed community. I even do private workshops for free as I dont want to charge a single dime like the gurus out there. But of course, there are random blessings from the organizers and community as well such as voluntary donations, treating me for food, etc., without even expecting it.
Youre doing great work in your Bitcoin charity activities. Keep it up, spread the word, love what you do, etc.
When you work for the community without any monetary benefit, usually people are kind enough to help you. It is not very easy to devote your time to the knowledge and betterment of your society.
By the way, did you later get feedback from those people whom you teach, on how this knowledge has helped them succeed in life?