The majority of couples meet on Tinder these days. Your advice is outdated
https://www.pewresearch.org/internet/2020/02/06/the-virtues-...
of those with a partner, 21% said they met them online (gets lower with age too)
https://www.pewresearch.org/social-trends/2020/08/20/nearly-...
And note that this says "online dating" not specifically tinder. Statistics show that 80% of women sleep with 20% of men on Tinder. Tinder is a place women go when they are interested in having sex with men based on nothing other than their looks. That is fine, if you are in the top 20%, if you aren't, it is a real fools errand.
39% in 2017. I'd be very curious to know the numbers over the past two years as in 2017 bars/restaurants were at 27%, school/college at 9%, and work at 11%.