I have geraniums in the garden and in pots and there are some that are very leggy and not looking too good. I have given them Thrive and some slow release flower fertilizer but it hasn\\\'t seemed to do anything. They have flowered but not grown well. I can\\\'t upload photos in this response for some reason.
Certified GKH Gardening Expert
Are these getting enough light? This can happen due to a lack of light. This article will give you some tips on the care of these: https://www.gardeningknowhow.com/ornamental/flowers/geranium/geranium-care.htm