Where do you want to live in on the Dallas side of the Dallas-Fort Worth Metroplex (DFW) if you want to maximize your chances of getting laid and getting into relationships?
Where you choose to live in Metro Dallas and where you choose to start interactions with women (either non-bar venues or bars) should be close to each other. Dallas traffic is pretty bad. You don't want to live in Plano and be dating a woman in Mesquite. You don't want to live in Irving and date someone in Frisco. It would be improbable to have those interactions start in the real world but they could happen. Additionally, these interactions can happen with swipe apps without setting the geolocation filter to a narrow range. I would recommend setting the geolocation filter to no more than 10-15 miles no matter where you live in Metro Dallas or DFW as a whole. The traffic is too difficult otherwise. Public transportation isn't that great in Dallas as most commute by car. Also, as mentioned in the first post, Dallas and Fort Worth are too far away to make anything other than the occasional situationship function. If you live in Dallas and even have male friends closer to Fort Worth, it's not easy to see them due to logistics and traffic complications.
If you're in your early 20s-early 40s, childless and want to date other childless people, you want to live in areas near Downtown Dallas. You don't have to live in Downtown Dallas itself, but central-ish neighborhoods like Uptown/West Village, Upper Grenville, Lower Greenville, and Knox-Henderson are good enough. Generally speaking, you want to live south of Interstate 635 between the Dallas North Tollway and US 75/Abrams. It's even better if you live south of Northwest Highway. Most apartments are south of Northwest Highway and west of Abrams. The area between Northwest Highway and Interstate 635 is mainly single family homes, though there are some older apartments and condos around there.
North Dallas (north of Interstate 635 but south of George Bush Turnpike in Dallas city limits) is a difficult place to date, especially if you're 35 and under. North Dallas nightlife does not compare well to the Dallas areas nearer to Downtown mentioned in the previous paragraph. North Dallas is close to Addison, and I'll describe Addison in a moment.
Addison is an inner ring suburb adjacent to North Dallas. North Dallas and Addison can be thought of as one single scene. There are a few apartments near Addison Circle and some nightlife venues there and along Belt Line Rd in Addison. You might be able to daygame around certain parks and on certain streets in Addison, though I wouldn't recommend it. While some people think there's a scene in Addison and someone could make it work within the Addison scene, the Addison scene is weak compared to the areas closer to Downtown Dallas. There are very few situations where I would recommend Addison.
The north of Dallas suburbs (Plano, Frisco, McKinney, Allen) are mainly family areas. There's a small pocket in North Plano that could be an option. This small pocket includes the Austin Ranch apartments, Legacy West, and Shops at Legacy. There's some daygaming that can happen with women walking between places at Shops of Legacy/Legacy West. There are also a few night venues up here. In general, the north of Dallas suburbs are more geared towards childless established couples and families with children. The unattached male is going to mainly feel out of place up in these areas. If you're a 6'0"+, muscular unattached male with a fetish for having sex with married women, you might really enjoy north of Dallas suburbs. You could find a situation where that could happen. That's not an easy niche to exploit. In these north of Dallas suburbs, it is borderline too far away/too far away to date people who live closer to the neighborhoods I mentioned near Downtown Dallas.
Garland, Irving, and Richardson aren't that great of suburban options. These are all older, inner ring suburbs. There are some niches that could work here, but they are small. Additionally, you're not well situated for dating childless White women in Dallas in any of these places.