trying capture one for first time

I recently made the decision to convert from LR to Capture One! I'm impressed thus far, but the image I'm getting doesn't appear as nice as it did in the preview. The image appears warmer than in preview when it is exported to my phone or is viewed on a computer. I tried comparing with LR, and the photographs from that programme looked more like the preview than those from Capture One, even on my phone (an iPhone 13). I'm using a trial version right now. I want to replace Lightroom for photo processing, thus I need advice.