These are all free options, because FUCK spending money.
Albion Online - Watch anime while you chop down trees, sell trees to buy the most powerful gear in the game then go bully brown third world people with it in safe zones giving them a 3 minute timeout every time you beat 'em up. Real easy to do and endlessly satisfying.
Deadlock - It's a MOBA but better than League or any of those other games cause it's also a shotter. Just PvE for 15 minutes ignoring your team and objectives then go dunk on everyone underfarmed. Can also talk mad shit over voice chat.
Starcraft 2 - Custom maps are just poor third worlders but there's plenty of fun ones to waste time on. I like the tug of war style maps.
Throne and Liberty - I don't have much time into this, but so far as a solo friendless player it's got plenty of shit to do. Noticing lots of third worlders in the chats though speaking their burrito language.