Random password generator + algorithm

I'm currently developing a CLI password generator and I've been trying to come up with ways of randomizing characters between a defined set of chars. I know the srand(time(NULL)) method but as far as I know, it's a bit incosistent and not so safe to generate random passwords. I also know there is a way of randomizing numbers using the libsodium library for C (according to this topic), but I'm not sure how to use it. Should I install all the dependencies in my project? Is a relative small project to have such a huge library. Although I plan expanding it as time goes by, I don't know if it's worth having a huge library and not use most of its functions. On top of that, are there specific algorithms to generate passwords other than just randomizing characters? Should I also randomize the array within itself following another algorithm for better consistency like the Fisher Yates Shuffle? Thanks in advance!