My luck has been bad should i keep going?

happens. I think you should stop and w8 for next time. My recent string of bad luk was trying for shishou using 300+140 paid sq and tickets and didnt get her.

I mean you probably shouldn't be totally financially irresponsible, but if you're ok spending money on 10 rolls go ahead. Your odds of getting him are exactly the same as when you first started.

If you can afford to pay for quartz without impacting your important finances, then go ahead. You shoud also always draw a limit as it can lead to addiction.

You can draw him by using a single ticket (3 quartz) or after 20x10 rolls. Luck is everything.

I would suggest against spending more if you want a specific hero. I've pulled two unexpected 5 stars with Free SQ and Summon ticket on a rate up for other heroes, so even if you hit that 1% roll, you may get someone else.