Loreta, have a read of below article to understand the symptoms and what remedies would work better. You’d still need to see a homeopath for private consultation as our state of mind and sensitivities define the best suited remedy.
Because of my own sensitivities, I started with Byronia few years ago to fight the common cold/flu and it worked well before moving to Silicea which kicked it out of my system altogether. Both are on the recommendation list. Arsenic Album has been ruled out which was initially suggested by few homeopaths since lot more data and cases are available now to conduct a thorough analysis.
Coronavirus Covid-19 - Analysis of symptoms from confirmed cases with an assessment of possible homeopathic remedies for treatment and prophylaxis
In my case, I keep a bottle of Dr Reckweg’s R83 which is a mixture of few remedies and its my best defence against all manners of flu, colds and hay fevers. I remember coming down with a heavy flu late last year (might have been Covid-19) which lasted few days. I took Silicea initially, finishing off with R83 and was completely healed in 5 days. During the process, I could feel a battle raging inside my body. Imaging having a feeling of a really bad flu without the accompanying body ache or heavy headaches. You feel like you just had a massive headache which is receding but never actually got to live through the headache if you know what I mean. Homeopathy gets to work within seconds after entering your body. You may suffer the effects of fever for a day or so and then you are constantly in recovery mode.