Might I suggest that you explore what pleasures you so that when you do have sex you will know what makes you feel good and can share that with your partner. Toys could be fun. Try different fantasies and get to know yourself.

Also you don't need to hurry to have sex. I often found it fun to kiss and get into some heavy petting and touch each other but it doesn't have to be actual sex to have fun.

Perhaps some music playing could be fun. There are some songs that I always thought would be fun to listen to while having sex.

And most important accept yourself and realize that everybody is different and what is fun for one person might not be for another.