This is the 3546th most frequent Russian word.
самому
"Самому" means "oneself" or "by oneself" in English.
'Самому' shows that the subject (myself) performed the action on their own.
Мне пришлось исправлять ошибку самому.
I had to correct the mistake myself.
'Самим' (modified form of 'самому') refers to reflecting or being in the company of oneself.
Хорошо иногда побыть с самим собой.
It's good to be alone with oneself sometimes.
'Самому' emphasizes that the subject wishes to attain a skill independently.