We used an interior design specialist from
https://sghomeneeds.com/services/interior-designing when we were moving to a new city and had really tight time constraints to get the choices made, and the two of us couldn't agree on anything. The designer helped us chose the color palette and the fabrics, and helped us find competent tradespeople to do the painting, window coverings, and upholstering. For us, it was worth every penny, and we'll probably hire her again the next time we move. We found her by asking our real estate agent who he used.
If you have more time you can just use houzz.com for ideas.
Often the rooms pictured have links to the items that you can buy (or in the user comments)...and you're not confined to one source. Another great resource is Pinterest.