Aspire Go 15 : very poor sound

My old Nitro i5 2015 died and I've immedeatly bought new light i7-based Acer AG15-71P.
And when i went to youtube to watch some video, my ears got broken.

I heard a sound that was much more worse than on my android xiaomi mobile. Could not beleive it. The sound is with fully absent lows, flanging highs and distorted mids.

I thought that was drivers/windows fault and tried everything, changed 16-24bit, enhanced sound, mono sound, reinstall drivers from Acer downloads - nothing helped.

Difference between sound quality of Nitro-2015 and Go-2025 is like between HiEnd and some $5 speakers from Aliexpress.

Did not expect this from Acer buying laptop for $700. How much you really spent on this speakers?

And, still hoping maybe someone solved this