Very confusing post. My best guess is that the plant is suffering from too much water. Too much water IMO is the single greatest killer of potted plants. The soil should certainly dry on top before watering, and it should just be barely moist deeper in the pot. Since clay pots breath, plants in them are much less prone to suffer from water logged roots.
Also, I couldn't tell from your post whether you just bought the pot, or just bought the plant. In any event, if the plant is new from the nursery, it is likely tender as gerbera daisies are often grown in semi shade areas or under shade cloth. So putting the plant outside directly in the sun and the wind would be very harsh on it. Gradually introduce the plant to those outside conditions, with only a visit of an hour or two at first. The plant will likely do better in filtered light or morning sun only, as they don't hold up well under the hot afternoon sun.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.