I’m not new to dnd, but I’m new to DMing, and I’m having trouble finding ideas for a campaign, any advice?
Talk to your players about what kind of game style they would like to play - Dungeon Delves, High Fantasy, Cinematic Fantasy Action Heroes, Political Intrigue, etc.
Then figure out what kind of game you feel comfortable running and ignore all their suggestions...I mean incorporate their preferences as best you can into your own preferred campaign style.
If everyone is mostly interested in kicking down doors and fighting monsters, trying to run a tight political intrigue campaign will probably fall flat. (Although if you mix it up from time to time the players might realize they enjoy the story heavy/RP stuff more than they thought.)
The main point is try to find common ground between what you feel comfortable running and that they want to play so you both enjoy the game and it doesn't feel like a chore for you.