Do I so often encounter simple past for past participle (e.g., “I have went,” “what was did to her”) because of where I am or when?
Solution 1:
The expression of perfect aspect by combining a form of have with the simple past tense is not standard English usage. They have been attested for centuries, however: they were noted and proscribed in some very early usage guides (e.g. Reflections on the English Language by Robert Baker, 1770; A Grammatical Corrector by Seth T. Hurd. 1847).
It is probably incorrect to label their usage illiterate, since they are widespread in the UK and the US as regional variants. They should be avoided, however, in formal speech or writing.