With the OM 10 camera the aperture is set by the photographer and the camera then chooses the shutter speed. Without seeing one or two examples of the photos you've taken I can't be certain, but my suspicion is that you've probably set a fairly small aperture (f/8 or f/11) and used a 100 or 200 ISO film, and the camera has been selecting shutter speed such as 1/30 and 1/60 second, in which case, the blur you are seeing is probably caused by camera shake?
As a rough rule of thumb, depending on how steadily you can hold a camera (and this does vary between individual people), try to use shutter speeds of 1/125 or faster when shooting hand held with a lens of 50mm or above - the longer the focal length of the lens, the higher the shutter speed needs to be to avoid camera shake.
If you post a couple of example shots we should be able to see if it is the above, or another issue. With film photography, generally speaking (there are some exceptions) you are stuck with shooting at the ISO of the film you've loaded in the camera. If you want to use smaller apertures for increased focus 'depth of field' and it's a dull day then you'll need a faster film (400 ISO or above) so you can use shutter speeds fast enough to avoid camera shake if shooting hand held, either that or you'll have to open the aperture up more to achieve a faster shutter speed. With DSLRs, the ISO will usually automatically increase to compensate for a smaller aperture and a high-ish shutter speed; film doesn't usually give you that option, so choosing the right film for the particular circumstances is part of the art of film photography.
The Film and Conventional section of this forum is full of experienced film photographers and I'm sure a lot of them would be only too pleased to help you get some good, sharp photos from your camera. However, quite a few of them don't venture into the non film sections of the forum, so may not see this post. So perhaps give the F&C section a try and post any film photography related questions you have there, and I'm sure you'll get some good tips and suggestions.
Hope this is helpful, and stick with it, film photography is great fun, but it can be a cruel mistress at times and doesn't give the margin for error that modern DLSRs often do. So don't give up yet, it's just a matter of leaning a few new skills.