Since you haven't played in a long time, perhaps you should take a budget-focused approach in case it ends up it still isn't something you end up being into. So, I'd say try to get your hands on a Xbox Series S - it's the digital-only budget system (no disc drive, lesser specs) of the incoming new consoles, though it will still play games at much faster speeds and much better image quality than existing consoles. It's only $299.
Then you can try Microsoft's subscription-based game service Game Pass. It offers a pretty breathtaking selection of games for $9.99 a month, or $14.99 for Game Pass Ultimate which also includes access to online multiplayer (Xbox Live!) as well as a selection of games for the PC. Game Pass even includes new releases from Microsoft and their various first-party studios. Think of Game Pass like Netflix for gaming.
This way if gaming doesn't click with you, you can cancel your Game Pass subscription and sell the Xbox Series S.
Another budget option, though more expensive, would be the PlayStation 5 Digital edition, which will be $399. It likewise lacks a disc drive, but it's significantly more powerful than the Xbox Series S (hence it being more expensive). While Sony doesn't offer a subscription service persay, they will be offering a large collection of games if you subscribe to their PlayStation+ online service - for $9.99 / month. You'll get a "free" PlayStation 5 game each month as well as this list of games (named the PlayStation Plus Game Collection) - which includes many stellar Sony exclusives from the current generation, as well as some third party titles:
From Worldwide Studios:
- Bloodborne
- Days Gone
- Detroit: Become Human
- God of War
- Infamous Second Son
- Ratchet and Clank
- The Last Guardian
- The Last of Us Remastered
- Until Dawn
- Uncharted 4: A Thief’s End
From third-party publishers and developers:
- Batman: Arkham Knight
- Battlefield 1
- Call of Duty: Black Ops III – Zombies Chronicles Edition
- Crash Bandicoot N. Sane Trilogy
- Fallout 4
- Final Fantasy XV Royal Edition
- Monster Hunter: World
- Mortal Kombat X
- Persona 5
- Resident Evil 7 biohazard
Personally, I'd take the risk on the PlayStation 5 digital. Those are some amazing games, and if you end up enjoying gaming again, PlayStation tends to own on the exclusive games front between the two consoles - in regards to overall quality of the games, the number and frequency of their releases, and the diversity in genres.