There is a lot of variation among native English speakers. The only thing that sounds non native in what you wrote was “if you spot out anything”. I would always expect “if you spot anything”. But the fact that other posters picked up on different things suggests this could be regional variation (I’m in the UK). I know people who have lived and worked here for a decade and still feel they perform worse in a job interview in English rather than their native language due to the extra cognitive load. On the other hand, my partner has lived here about 10 years since she was a student and finds many things (e.g. work stuff) she can express more easily in English while other things (how she’s feeling) in her native tongue.
I speculate that you get better when you are pushing past your limit, whereas comfortable practice stops you from regressing. For example, being in a situation where you are too tired to speak English but you have no choice. Also, you could try more challenging forms of text such as poetry or older English literature. While I doubt you have need to speak like Shakespeare, forming a bit of fluency with 16th century English may prime your mind to be more aware of the subtle differences you hear in modern English. Anyway, just speculation so take with a pinch of salt!
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There is a lot of variation among native English speakers. The only thing that sounds non native in what you wrote was “if you spot out anything”. I would always expect “if you spot anything”. But the fact that other posters picked up on different things suggests this could be regional variation (I’m in the UK). I know people who have lived and worked here for a decade and still feel they perform worse in a job interview in English rather than their native language due to the extra cognitive load. On the other hand, my partner has lived here about 10 years since she was a student and finds many things (e.g. work stuff) she can express more easily in English while other things (how she’s feeling) in her native tongue.
I speculate that you get better when you are pushing past your limit, whereas comfortable practice stops you from regressing. For example, being in a situation where you are too tired to speak English but you have no choice. Also, you could try more challenging forms of text such as poetry or older English literature. While I doubt you have need to speak like Shakespeare, forming a bit of fluency with 16th century English may prime your mind to be more aware of the subtle differences you hear in modern English. Anyway, just speculation so take with a pinch of salt!