How do I edit my photos like this style? Ambient, cosy etc

Perhaps i should have just said what type of lighting and background do i need to capture this ambient lighting. As well as the editing and other post photo stuff. – Joseph

This image is obviously shot with a window in the frame and providing light. Using a sheer white cover over a window is a common method for utilizing window light, which is soft in general and made softer by the sheer covering. It could be a very overcast day or some time of day where the window is getting less light, as it is not very bright. The window light is cool by nature.

The tree and background are lit by warm colored string lights. The light output of the string lights is greater than the light coming in from the window, else it would be overpowered. You get this by shooting a location at the right time of day. Else, you'd have to add more scrim to the window to reduce the light coming in.

You'll get the orange aura/glow naturally from string lights - play around with it.

The editing on this image appears minimal: possibly some curves/levels tweaking, a bit of color balance, and most definitely a vignette. I'm not personally a fan of vignetting images to the point of looking like they were shot through a paper towel roll, but to each their own.

You should practice using just window lighting, and just string lighting, and then combine them. Note specifically the light ratio and how limiting the window light makes the string light aura appear stronger. This is called mixed lighting - or the mixing of artificial and natural lighting. It's most commonly done with flashes/strobes, but can be done with still lights as well. If you want to get more into this, I highly recommend https://strobist.blogspot.com.

I’m not sure about lighting but if I want to achieve a shot like this, I would increase the temperate/warmth and take out as much of the blue’s as possible in the image. I’d maybe even shift the greens to the warmer end of the spectrum too.

That shot looks like no special lighting was used at all. The warm glow is from the clear incandescent tree lights. It is shot with a slow shutter speed. Use a tripod and if you have a subject, don't allow it to move.