Nope, no need to avoid them! Red plants are great, and not
necessarily harder to grow than green plants
.
A select few red species in particular can be a bit fussy, mainly preferring softer water and requiring high light levels, but most don't have this issue. Also, some red species may grow less red than expected and look more green when grown under relatively low light conditions. Just Google (or simply make a thread to ask here) any particular red species you are interested in before buying if you are unsure if a purchase is worth it, but that advise should equally apply to green plant species too IMO.
Some plants produce red pigments to block out unrequired and damaging excess light, and some aquatic plants only look red in aquarium when they are grown under nitrogen limiting conditions that reduces the green chlorophyll concentrations in their leaves relative to redder pigments like carotenoids.
Are there any red species you are particularly interested in? If you are looking for something super-easy that will stay red in relatively low light, I would recommend
Ludwigia palustris. L.repens is easy too, but tends to stay greener under lower lighting conditions for me IME. My favourite is probably
Limnophila aromatica, or "rice paddy herb", which is super easy to grow but needs higher light to stay red. Grown in low light, only the top of the plant will be orange./red, but it will still be healthy and pretty. Best thing about it is that you can use excess cuttings for stir fries
.