Can I teach myself martial arts at home?

Anonymous
im not trying to win championships... im just tiny and i literally freeze when someone creeps or w/e and end up bursting into tears the second i get home
... I don't know what to do and I don't know why i even freeze or get shocked in the first place...
and i dont have a man

for personal reasons, i can't go to martial arts classes
so can i teach myself? from utube or something?

is it possible to start at age 22 ? or is it like ballet or something you have to start really young?
Can I teach myself martial arts at home?
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