Space

My iPhone is a 64GB space capacity and says it does not have enough storage and so essentially I cannot access my old images or take new pictures and use my WhatsApp without it saying that I do not have enough space, so I upgraded my storage space and bought more storage and it still does not give me access to my apps and I’m literally frustrated because I have tried everything including deleting apps and files and images even though I only used very little space from my upgrade plan, even before I upgraded I still had space and it still did not work.