Dating after long relationship/marriage

I’ve been separated from my husband for a year (not officially divorced yet) and no kids. I’ve spent the last year reflecting and working on myself. I’ve encounter a few men but they just okay games. I’ve noticed what I struggled with: boundaries and seeing the red flags and acting accordingly. I’ll see a red flag and justify It instead of cutting that person off. Help! I’m done with the fuck boys and I want to set my standards and actually stick to them. Any advice?