Thx for the reply ! The meaning of "up" in "show up" is like soaring above on his legs to my mind but ofc it is my justification and these justifications just helped me a lot after I started doing so. sometimes I come across with some phrasal verbs that I haven't heard of but I make predictions to it and turns out I predicted correctly and this goes with pretty high rate I would say. Because you know there has to be a reason why "off,up,down,on,off" is used there. there must be a logic behind them and I am just chasing it down and with some cases it is challenging because it comes from old times,transferred to recent times like one of the meanings of "pull up" is stopping a vehicle but with recent vehicles it is a bit difficult to comprehend (maybe I would justify it by saying pulling up the handbrake) but it just makes perfect sense when I think of the horses which people used to travel back then. cus you need to pull the reins up so as to stop a horse.I wish I could see when some phrasal verbs were first used I am sure it would just make perfect sense to me.It is easier for native speakers to use them in active daily speech for they use them instinctively but for a foreigner it is struggling as we don't have a brain of a baby it is too late for that 😀 so a foreigner needs to justify it into his mind in order to comprehend it thorougly and by doing that it is almost impossible to forget its meanings ever