You could invest in a bike stand, a few basic tools and start trying to replicate your condition. This is the Bicycle mechanic section of the forums, everyone saying take to the bike shop obviously just wants to be safe with suggestions. I'd say educate yourself on what you have and don't be intimidated by extremely simple mechanical mechanism.
Once you go down the rabbit trail and figure out what is the contributing factors you will be forever connected to your bike, you will be one with it. Don't rely on some hourly employee to have any real concern for something they will probably consider normal for a 1x10. were talking about a 11-46 cassette and a medium cage derailleur, their is going to be some chain wiggle depending on what cog your in. good luck never give up.