Easy:

• If you have unlimited internet data, watch all their MVs and songs from their official channel, not from distributors such as 1thek or Stone Music. Don’t mind the amount of views and don’t compare them to other groups, just leave your phone playing)
• Stream their songs on Spotify

Fun things to do during your leisure:

• Start a discussion and talk to your fellow fans at r/PinkFantasy
• Share what you like about them on r/kpopthoughts
• Recommend their contents on r/kpophelp. For songs and MVs, Link only to the group’s official channel. Do not link to videos uploaded by fans or distributors.
• Share photos on r/kpics
• Optional: If you are using Reddit website and you enjoy designing, ask the moderators to let you customize the subreddit or just send them banner, avatar, and icons that they can upload.