I just couldn't concentrate. Lots of things would come to mind. Revenge, sex, regret, frustrations, hope, plans and a lot just used to happen in mind at that time. More than usual. More than it would usually come to my mind. It's not that they are always on mind, it's not a problem. But at least for meditation you are supposed to be free of such thoughts and even if there's a thought it ought to be only just that tho…
This a pernicious falsehood. It's possible to achieve, but even most advanced meditators aren't spending long stretches of time thought-free. Wrestling with your concentration and being aware of what you're experiencing is meditation.
It's pernicious because it leads people to believe that they're not any good at meditating, since they look at their mind and are aghast at how cluttered and chaotic it is. The fact that you now start to see it, IS meditation.
You were doing just fine.