I locked two big sentences and now I can't unlock them. I can remove everything else except those two. When I hold on them it has the option with faded letters and so can't tap it
I'd like to recommend creating a account so me or other members can assist you, as guest have limitations in replying here and if we need further Information to communicate with you.
Most phones can't hold more than a single "copy" at a time, so that's either a clipboard app, a Samsung (or possibly an LG - I think they might have come up with a clipboard manager). And what you do depends on which of those it is.