To clarify, I've been reading how when Rome accepted Christianity, they were many laws limiting pagans and there practices. Like how the only writings to be permitted were those supported by the line currently regarded as orthodox, pagans were discouraged from writing anything, or rulers sacking and destroying pagans temples. I just wanted to know if this was true, done for religious reasons, and were these really enforced or just lip service for emperors?
I haven’t really got the time to answer your question as well as I would like right now- and I don’t want to give you a subpar answer- so I hope you don’t mind if I link to an answer I wrote a few weeks ago on when Rome officially adopted Christianity. It doesn’t completely address your question, but in the latter half I explain how Paganism survived beyond the official closure of the temples in 391 CE and talk about some Pagan writers.
If I get a chance I will try and write an answer to this question specifically (but I’m still working on a question at the bottom of that thread so there’s no promise I will get it done soon!) unless someone else has already given you a better answer by then!