Looking to download chess games for my business trip. Any site suggestions?

Hi, is there any safe sites to download free chess games? I use to download from this
site https://www.gametop.com/download-free-games/chess/. But I am looking for more challenging level chess games, with varying difficulty. It will be good if it has multiplayer mode so I can play with my colleagues during domestic flights. Please help. I am flying next week. I don’t mind paying a few bucks if the chess game is good.