Art quality is relative; even simple drawings can become money-makers such as Crayon Sin-chan, so whatever your Art proficiency is at, it shouldn't be a problem as long as you can find the right market and demand.
That said, there are websites that prioritise detailed Art and they also post Gaming Industry vacancies that one can work remotely to; you can Google them, these Stations of Art.
If you want to learn from those already Working from Home, it may be best to watch Live Streamers and get their help on pointers and whatnot. Most on the Art Category are social enough to share their experiences, and most who are still Streaming will know a thing or two about surviving in this COVID-19 climate.