Don't know about sales, but definitely LG is one of my least preferred OEM in general. Even though I buy pretty much every flagship LG flagships are always the ones which disappoint me the most. Only thing I love is the DAC other than that pretty much everything is average to me personally. G7 looks good though but again I'm not seeing anything in there which is making me go out running and buy one. I easily get tempted to buy new devices but with G7 I'm not and will wait a month or two to buy it on swappa or on a sale because definitely not worth for me at their asking price.
And also the LG fanboy here shoots down any criticism against LG, but IMO they always try to be like Samsung who I'm not a big fan anyway.
And lastly, at least in the US I hate how they let carriers dictate everything and don't even try to stand up for their products in general (yeah I know that's how people buy phones here). Also they ignore the US unlocked model completely for updates (one guy here will come and say why you care updates, updates are bad
)