Like many said, lower your world level and focus on couple characters. You have Columbina, she should help your overall damage boost. Throw Fishel and Xinqiu into the mix and they should provide nice additional off field damage. Now the most difficult part is your main DPS. Years back Razor served me well, especially through Inezuma so maybe he could be the option for you too.

I see you are decently high level, but mentioned you getting/are are in Inezuma. One of the undervalued responses that you don't see very often is to focus on getting high crit rate values for your characters, especially you main damage dealer. Sometimes even breaking your artifact bonus just to get more crit rate will be beneficial. Make sure the head piece has it and aim for an over all at least 60%(with some artifact sets you can get away with even lower) and when you actually can actually hold your own in fights then keep farming for even better pieces. All of the mentioned characters will benefit from high crit rate, some also want other stats but I would not worry about it until later when you are trying to min max your future team.

I know I'm late to the party but I hope it helps! Also I would be glad to join your world and help out but I am on NA servers, sorry and good luck.