Many people are not really interested in having perfectly native-like pronunciation. You really need to have a strong motivation to practice a particular accent

Many people are not really interested in having perfectly native-like pronunciation. You really need to have a strong motivation to practice a particular accent, something that e.g. actors or sometimes even singers might have, but the regular person just "wants to be understood". I say this as someone who regularly tries to speak as native-like as possible in any language he learns, but that's certainly not the norm.