Geraniums Have All The Problem

Question

I am new to plant care. I got my first plants a few weeks ago (something to do during quarantine) and the geraniums were the only plant that seemed to be doing well until about a week ago. I noticed they were covered with small white fluff but it wasn’t moving. The buds were drying before they opened and recently the leaves started turning yellow with brown spots. I don’t know what is wrong and I am losing hope the plants can be saved (there are 3 others with the same problems)

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Answer 1

It appears to be aphid damage. These articles will help:

https://www.gardeningknowhow.com/plant-problems/pests/insects/homemade-aphid-control.htm