Follow these steps to get yourself into a solo online lobby, useful for doing sell missions without having the risk of some douche on a oppressor blowing you up ^.^

1. Load up GTA V normally into a normal online lobby

2. Tab out of of game and open your "Task Manger"

3. Go to the "Performance" tab and at the bottom left click "Open Resource Monitor"

4. Go to the "Network" tab and right click on GTA V

5. Click "Suspend Process", confirm and wait 5-7 seconds

6. Right click GTA V and click "Resume Process" and confirm

7. Tab back into GTA V and you will find yourself solo in online lobby ^.^

Useful tip, you can do this trick while mid mission without the mission failing, however if you have anyone helping you with a sell mission then they will be kicked too