My only suggestion is the make the defence team in your raid your attacking team. Change the name to “raid team” so that you’re locked in to fighting with a single team.
Why? I can get easy raid chests by having a low team and then come in with a better team and clean up. These raid chests should be made a little more challenging (and perhaps monthly competitions with tiers ). It would also help to get levels a bit better that you’re competing against similar levelled teams.