I've seen some people feel demotivated about art fight due to not getting a lot of attacks, so I'm gonna make a post with some tips since this is my sixth year competing.
My number one advice is to keep attacking people. The more you put yourself out there then more people will see you and your account. Follow artists you think are neat. Remember that you are never guaranteed a revenge, and don't hold it against anyone! This is an art gifting game after all.
Another thing that I personally think helps is to have a variety of characters on your account. Not everyone can draw everything. Some people can only draw humans, others furries, etc. More options means that more artists can attack you.
I know it's hard if you only have one or two characters you want art of, and obviously some people only have a few OCs in the first. My advice if you're in this position is to find and attack other artists with characters similar to yours.
But in the end my biggest advice is to just keep drawing and attacking people! I've found so many artists that I've ended up attacking by looking at the attacks that other people have received. We're halfway into the event but it's not too late to draw and have fun!