Music via Bluetooth sometimes echoes, why? Kia Sportage 2019?

I own a Kia Sportage Bj 2019 and when I connect my phone (Huawei P Smart 2019) it sometimes echoes the music that is playing.

There are also rides where the music does not reverberate.
The phenomenon occurs sporadically and as soon as I connect the phone via USB and start Android Auto, the sound quality is much better and without halls.

Sometimes it also helps to turn the car off and on again.
Does anyone have any idea why it could be?

This is due to the Bluetooth connection

Of course… But why does it sometimes sound perfect and sometimes not?

Because sometimes she is not perfect and is disturbed by something