Interpretation of 糧に次から

Question

恋愛も勉強もトライ＆エラー。

やってみて失敗し、その教訓を糧に次からまた行動する。

そういう意味では俺も亜子も、今まで恋愛に消極的に生きてきたのはちょっとばかし損だったんじゃないのか。

まあそんな風に周囲から思われたとしても、そこは不思議じゃないかもしれない。

Context: mom giving screwed up love/sex "lesson" to mc and sister. All of this is MC's internal thoughts, but i'm not exactly sure what he's saying

If you try and fail, this sort of lesson, will encourage you try again next time.

糧に次から = encourage to try again?

Also, could someone confirm these sections if you don't mind?

ちょっとばかし = really really ちょっと? (This idea, for me and ako, mean that halfheartedly trying to get into a relationship up to now will only be of little consequence.)

~から思われた = get a feeling from ~? (anyways, that's what i get from this environment( the lesson?), this is strange isn't it.)

Answer 1

• What you are seeing is an adverbial expression その教訓を糧に, the AをBに construction meaning "using/with A as B". その教訓 refers to the lesson learned from the previous failure. 糧 ("food") refers to something that mentally grows or inspires you. More examples here.
• ちょっとばかし is a more informal version of ちょっとばかり, "just a little", "only a little". It (adverbially) modifies 損だった.
• This 周囲 ("surroundings") means "people around me".
• 不思議じゃないかもしれない is "it may not be strange?" rather than "it's strange isn't it?"

やってみて失敗し、その教訓を糧に次からまた行動する。
People try, fail, and take their next actions in the light of the lessons learned (from the previous failure).

そういう意味では俺も亜子も、今まで恋愛に消極的に生きてきたのはちょっとばかし損だったんじゃないのか。
(At least) in this sense, the fact that both Ako and I have lived life in a passive manner towards love up until now...it was a bit of a "loss", wasn't it?

まあそんな風に周囲から思われたとしても、そこは不思議じゃないかもしれない。
Well, even if people around me thought like that (i.e., "Ako and MC have lived a bit of a dull life"), that may not be strange.