Solved! My micro sd card is very slighty bend, it isn't totally flat, so i can't put it in my Samsung A40

[Eni106]

I can't close the tray inside my phone because the card peek out of the tray

 

[rgd1101]

get a new sd card

 

[webworkings]

You won't be able to use it in that device if it won't fit. You can try getting the data off of it from another device, if you can find one that can access it (perhaps a computer), but rgd1101 is right, you will need a new card.