Default I have 128g SanDisk micro

My question is this....I have some notions based on having a 64g micro SanDisk. I wanted to get smart people's feedback lol.
I am rooted ...pretty much using philz recovery. I have used others (recoveries). They all do not "read" the sd card. I had to format my 64 to a fat32. I know there is limitations to that but what else is there to do. And that is why I ask you smart people ....Perhaps you have a better insight than I....

Thanks

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