If you’re truly interested, you can read this Vox article as a starting point to do some research on long term effects of Covid. Since the virus infects so many cells, the damage can happen in several body systems. Lung damage has even been reported in people who were asymptomatic. Cognitive decline is a major lingering effect. Myocarditis, deep vein thrombosis, strokes, hypogonadism, etc. These effects sometimes last for several months.