Something I’ve learned as someone with high proficiency in another language that I learned in adulthood (I would never say fluent, maybe “functionally” fluent):
Poor pronunciation (I.e. thick accent) but good grammar is usually more forgiven by a native than great pronunciation but poor grammar. Because then you sound more native, but you sound a bit… mentally slow.
I am in the latter camp. My Mandarin Chinese accent is really quite good. But I sound like a child.
So my suggestion to all learning a new language: keep a bit of your accent and heavily index on correct grammar and vocab and listening skills.
Poor pronunciation (I.e. thick accent) but good grammar is usually more forgiven by a native than great pronunciation but poor grammar. Because then you sound more native, but you sound a bit… mentally slow.
I am in the latter camp. My Mandarin Chinese accent is really quite good. But I sound like a child.
So my suggestion to all learning a new language: keep a bit of your accent and heavily index on correct grammar and vocab and listening skills.