There are many multimedia solutions for ARM (e.g. libreelec, kodi, plex, jellyfin etc etc), however, these work best for non-big-streaming sites. The moment you're after a really good youtube experience, or netflix/disney+/etc, then things start break down for various reasons.

Personally, I'd just install the default Raspbian OS (maybe even just DietPi), making sure that their Firefox or Chromium supports drm websites, and then I'd connect the Pi to the TV, and then I'd use a keyboard + touchpad, like this one: https://www.amazon.com/Logitech-Wireless-Keyboard-Touchpad-PC-connected/dp/B014EUQOGK/ This allows you to use the machine exactly the way you need it to, without bad surprises and incompatibilities. Not the way you want it to, but more like the way you need it to.

Also, please note that if you're having a Pi with only 1 GB of RAM, it won't be enough for what you're having in mind. I have a 3B+ with 1 GB of RAM, and my Emby server (music only!) constantly needs more than 1 GB of RAM, resulting in the Pi to swap, which means that it wears out the microSD a lot.

Finally, if all else fails get an AppleTV, or a Chromecast with AndroidTV, or a Roku if you're in the US, but I think the desktop/browser solution can be workable. Not pretty, but most workable for DRM streaming services.