Looks pretty good so far. Remember that you can adjust highlight burn down (which I almost always do)…as well as adjust other settings like Levels or Curves. See difference here:
Default:
Corrected:
If it’s still really dark, it may be your camera settings. If it’s set to something like 100 iso, that’s meant for outdoor bright sunlight. Try bumping up to say 400 or 800. Higher iso means more ‘noise’ but that should be resolved with Denoiser. Good luck.
Edit: if the issue is trying to see both inside and out at the same time, that’s likely not going to work as professional photos are often re-touched and/or use HDR settings to capture multiple exposures. Rendering two passes, one over and one under exposed and blending in Photoshop or sim may provide a better result in the end. Depends on where you want to put your time in…front end or back end.