You can put an NVME ssd into a 2013-2017 MacBook Air or ‘13-‘15 Pro with a $15 adapter

RAM can’t be upgraded on any Mac laptop post 2012

I just picked up a 2 pack of 128GB of that top one for $20 at Costco, seems decent so far

Since you put it that way I’d guess English taught by Indians for whom it’s a second language?

Maybe the cadence? And I wouldn’t say there’s anything wrong with your accent but rather it’s apparent what your mother tongue is.