I highly doubt you ran a script for just 10 minutes and got banned unless you botted the tutorial island or were using a dicer and got muted.
Really the best advice I can give you is don't bot on accounts you don't want banned. If you are just starting off your best bet is to suicide bot until you can figure out what works best for you. Setting up breaks, and investing in premium/private scripts can also help lower ban rates. Botting common task such as chicken killing, and wood cutting have high ban rates etc.
Running with proxies will help avoid all of your bots getting smacked at once / add a layer of security for your main account or mules if you are really worried about them. Since you are a free user and can only run 2 tabs I wouldn't worry about it. Really this will just be a lot of trail and error for you to figure out what works best. Depending on what you are going for this could be a long process. If you are looking to bot to 99's you will need to invest a lot more time finding schedules/scripts that work the best for you compared to someone suicide botting chicken/cow killers.