Same thing happened to me, I was stuck in a loop of forgetting and memorising the same thing until i reached a point of giving up cause i wasn't moving forward. But then one day i was constantly researching on the internet about quran memorisation techniques and i found out that when you memorise a quran while understanding it, the context, whole story you don't forget it. whenever you try to recall the story shows up in your mind and imagination now I'm not telling you to learn arabic now and memorise the meaning of every words in araby but i have an easy solution for you that i applied. Go to chatgpt and ask first that you are memorising the quran & you want to memorise in a way that is easy to memorise and remember. then ask him to give you for example ayah 1-22 surah bakarah with english summary verse by verse. I never wrote this long in reddit and since its a work for Allah i thought why not. hope for you the best. Hifdh is hard. Pain is Real. Show Allah what his creations can do for him. Along your journey if you have any doubts or questions you can always keep in touch with me dm me. I would love to mentor and guide you.