Headphone problem! Audio Buffering

Hi everyone, I’m having a connection issue with my Bluetooth headphones and my Garmin Venu SQ. When I go out for a run and start playing Spotify, the audio becomes intermittent. The strange thing is that if I use only one earbud, the sound is fine, but as soon as I put in the second one, the problem starts. I even tried buying another (cheap) pair of headphones, but nothing changed — I still have the same issue. I have a third pair of headphones (unfortunately without ear hooks), and with those, the problem doesn’t occur.

I look forward to your reply. thanks

https://www.amazon.it/dp/B0BHWCJNWP?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 this work fine

https://www.amazon.it/dp/B0DSG1Z88Q?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 doesn't work

I would prefer earphones with ear hooks for better stability.