If your headphones work without problems the most likely cause is interference. Bluetooth operates at the same frequency as a lot of other devices, and therefore they can interfere with each other.
Most at often the cause is one you wouldn’t suspect, for instance a microwave close by (which can also be at the neighbors, depending on its proximity). They can be notoriously ‘leaky’ and since they operate in the same 2.4 ghz band, cause the effects you’re describing.
In more rare cases WiFi 2.4ghz networks can interfere as well, especially if there’s an access point that doesn’t obey the power limitations.
unfortunately, this makes it something you can’t really fix (except trying to find the most likely offender and eliminate it). If you can’t move to a different spot (where the interference is less or absent), wired headphones are the way to go :)