lost airpods pro 2nd gen

So yesterday i lost my airpods case which i couldnt track i dont know why when i log into find my from the browser because my iphone is on repair they also made me disable my icloud from it i think this is important so back to the main part i lost the case when i logged it said that i dont have devices connected i borrowed an old iphone from a fried today from which im typing this and i logged in my apple id when i went into find my i found: right left and case with emoji icons in the items option the buds are with me but i dont know where the case is i tried walking around the location it shows for the case but i cannot find it i remember it had battery though. When i was on the location the app showed it said with you and i decided to try to use the navigation option but it wasnt there also it says that it cannot connect when i tried to play sound i walked around pressing the sound option but no result also it says that i have to change the battery of the case i dont know why i had them for half an year only is there anything i can do to track them down. Also i cannot activate lost mode i dont know why it says failed enabling can i do something to track them down?