True, I do agree this forum helps seeing the red flags. I can easily spot the obvious ones when I'm swiping but as Mrbside said, sometimes you'll see the warning while on the first date. A red flag for me is actually "I want to be swept off my feat" which I see every now and then on profiles.

My recommendation is always to suggest going for a walk as a date. Worst thing that happens then is that you wasted 30 minutes of your life. For me, I suggest walking my dog. Doesn't take long to tell if this is someone I can go on a second date with or not. But I do agree spending time working on yourself first of course.