"Se fue a si mismo" is a sentence you did which I've never read or heard before. Making weird structures confuses you obviously.
Yes is "sí".
If is "si."
Instead of using "se", "si" is used in "si mismo or si misma or in plural with "mismos or mismas".
-self is "se" before a conjugated third person verb
The same -se is after a conjugated or infitive third person verb.
Just follow these Spanish rules and forget troubles in English to translate.
Yes is "sí".
If is "si."
Instead of using "se", "si" is used in "si mismo or si misma or in plural with "mismos or mismas".
-self is "se" before a conjugated third person verb
The same -se is after a conjugated or infitive third person verb.
Just follow these Spanish rules and forget troubles in English to translate.