。
As a parent, I was in a truly pathetic state.
Literal
Parent [as-として] truly pathetic state [at-に] was-[polite-ました].
A self-deprecating confession in formal/polite register. ~として 'as (in the role of)' attaches to a noun to frame a statement from that role's perspective. 誠に ('truly, sincerely') is a formal/literary intensifier — more formal than 本当に. 情けない 'pathetic, shameful, pitiful' is a common adjective for failure, disappointment in oneself or others. ~にある ('to be in a state of X') is a formal nominal construction for states.