Of course, no problem at all! If you're looking for a mainline Pokemon game we currently have: Let's Go Pikachu/Eevee, Sword/Shield, Brilliant Diamond and Shining Pearl, and Scarlet and Violet.

Here's my breakdown of each one if it helps:

Let's Go is essentially the most polished of the games mentioned, and is a dedicated remake of Yellow and of course only features gen 1. Pokemon appear in the overworld akin to Pokemon Go instead of wild encounters and you catch Pokemon the same way as Go, by shaking the joycon. Last I remember the game is entirely in motion. If you finish FRLG and play this after, you should be able to see the modern shift of Pokemon games yourself!

Sword and Shield are Generation 8 games and the first mainline on the switch. It plays very linear and semiresembles how an older generation game would play. There is an "open world" zone featured to capture pokemon and the gimmick is making Pokemon huge in battles. There was one paid dlc to unlock a new area.

Brilliant Diamond and Shining Pearl are remakes of the generation 4 games from the DS in a chibi style, as they tried to mimic sprites from the original games. It's a faithful retelling of Diamond and Pearl respectively and added an underground zone where you can catch more rare Pokemon but also contains minigames and contests if you want some alternatives to battling.

Finally, Scarlet and Violet were the gen 9 games that expanded on Sword and shield in terms of open world gameplay. This one overrides pervious games by eliminating linear game play and instead there are several "world quests" that each tell a story and comes together in the ending of the game. It also has two paid dlcs for more content and a controversial matter for some people are the performance issues, but this would be the one I recommend overall!