From what I’ve read, while there’ll be a few nods and references you might only get if you’ve played the original games; the game can be played with no need to have played the originals.
Also, if you do decide to pick up the original two games, keep in mind they were made back in the THAC0 days.
A few games have gotten me to do that over the years.
Mass Effect: Legendary Edition was what finally convinced me to fit a 1TB SSD, and Control was what convinced me it was finally time to get a ray-tracing card.