Before taking a look at how to recover data, first you have to clarify the “symptoms” to know if your card is damaged.
Whether it’s a new card or one you’ve never filled, there’s a chance you bought a “fake” SD card. False in the sense that the capacity they sold you is not what it can actually store. Fake SD cards are a recent plague, what they do is sell you one with much less storage, which when full starts to overwrite the stored data.
Assuming the data on your card is absolutely critical, like a recording of a once-in-a-lifetime event or data from your business projects, etc., you should consider getting help from a damaged SD card data recovery specialist. . It is a much more reliable solution than trying to recover the Wikipedia data yourself.
These companies have access to equipment and software far beyond the average consumer. They know how to rebuild damaged hardware components and they know how to directly read data from the media. They not only know how to work with common corruption errors, but also with electronic failure, chip failure, fire damage, water damage, physical damage and many more problems.