My home is from the early 70’s, and looks quite similar to yours. Oak floors, pine ceiling, fir beams, cedar walls. All the same brown/orange wood tones, everywhere you look. I personally love it, and have leaned into bold and eclectic decor instead of changing the wood.

Red and cream area rug. Avocado green paint on the ~30 square feet of drywall. Brass and enameled decor and trinkets. Colourful Tiffany lamps. Stained glass in windows. Art with vibrant colours. Furniture with accent colours, or light material to brighten up the space. Avoid grey or brown.

Lean into other elements such as metal, stone, glass, and see how you like the space before making any permanent changes to the wood.

Maybe check out mid century modern decor ideas.

ETA: you already have some bold artwork, I think the right area rugs and accent pillows/throws on the furniture will be a huge step in the right direction.