Sorry, but "alackadayfor" is not a real word. It seems to be a made-up word or a misspelling of a word that does not exist. Therefore, I cannot provide you with 30 example sentences using this word. Can I help you with something else?
Common Phases
Alackadayfor my forgetfulness; alackadayfor my lack of willpower; alackadayfor my procrastination; alackadayfor my bad luck!