Getting Switch lite, which Pokémon game is best? Both game mechanics and graphics wise.

Can you please suggest me the best Pokémon game for switch lite? Looking for a good combination of graphics and game mechanics. Thinking of Arceus but it doesn’t have gym battles, sword/ shield world isnt as big as Arceus. I am kinda torn. In the past I have played all the GBA and NDS titles. Now entering switch.