A drummer is an accompanist who creates beats, textures, parts, tone, and excitement.
In short, they are a team leader, team player and exhibitionistic showman/woman all wrapped up in one.
Drummers make it feel, sound, and look good.
Drummers make the other musicians glad they came to the session. In short, we bring joy and competence to the stage/studio/jam.
How do you go about this?
A caveat, the following ideas assume the student comes from a place of privilege with access to time, money, and resources in a supportive family situation. For those lacking these privileges, some societies offer community recourses or school programs. So don't give up. Seek out opportunities in community centres, possibly churches and city/town recreational centres. People want to help.
David Story, drummer, pianist, qualified online music teacher