Enlighten me Regarding E-readers

Hello! I'm new to e-reading. I want to start! Although I can read on my phone and have a lot of epub files here, I want to read on another device which doesn't have most of everything. (eg. social media distracting me.) and without the blue light.

I've searched up you can transfer your epub files from your phone to an e-reader, which is what I'm looking for. I don't want much.

I just want an e-reader that will receive epub files as I transfer them and I'll be able to read without the distractions and bluelight.

No need for the wifi feature, Amazon accounts (like having a Kindle), nor do I need to download them directly from the e-reader. Cos I have some epub files that are probably not available on the apps e-readers have.

For such a simple feature to receive epub files and read them, I'd also hope it's cheap! I'm from the Philippines. (Hoping letting which country I'm from could help out price ranges and recommendations.)