how to find out what filesystem is right for you?

hello, so in another thread i was asking about zfs vs ext4 and it made me realize, i don't know how to judge a file system and figure out what file system is best for my use case

i have one laptop, several external hard drives, and i serve only myself

given that use case scenario what would be my best file system and why? and in the future how could i figure out how to decide what file system would be best for my particular use case scenario?

thank you