hello i have a problem. I missed my riolu to level 100 and now it can't evolve. whether you can lower its level or not. I thank you

Hello there, @Zeus22

 

Fortunately for you, Riolu does not need to be deleveled.

 

Riolu evolves by having maximum happiness during day time. Maximum Happiness in this game is 255 and day time lasts from 10:00 - 20:00.

 

What you need to do is make it faint, heal it up at a Pokémon Centre and get it back to maximum happiness during day time (10:00 - 20:00) this should then prompt Riolu's evolution.

 

If you do not know about how to gain happiness or to check happiness of your Pokémon, take a look at this guide.

 

Aswell as this, if you do not know the ingame time break down, take a look at this.

[spoiler=Time Breakdown ]

 

 

 

 

Hope this can help, wish you a great day and weekend!