Hi sonatine!
Welcome to the boards
First off, people masturbate in all kinds of different ways and no, I don't think there is anything wrong with what you are describing. There is not one way that "everyone else" masturbates so we get to figure out what feels good to us! Here's a good article on masturbation:
How Do You Masturbate?
What about partnered sexual activities? Well, again we all have different preferences. You say manual sex - fingering - hasn't been super exciting so far and that's ok. Time to figure out what DOES feel awesome with your partner! To do that the first step is always communicating: what feels good? what is pretty ordinary? Talk about it!
Try reading these:
Be a Blabbermouth! The Whats, Whys and Hows of Talking About Sex With a Partner
With Pleasure: A View of Whole Sexual Anatomy for Every Body
And then have a think, and a chat with your boyfriend. Maybe manual sex isn't your thing, or maybe you'd like it in a different way - more focused on external stimulation for example - or with more lube, or maybe you just need to be more aroused from other things like kissing first.