Both those species may need some searching and finding to see, but that makes seeing them more rewarding. If you're living in the countryside, goshawks won't be easy to see unless you can find a nest (which may take a lot of walking). Your best chance might be to find a good viewpoint in the early spring and watch for goshawks flying above the trees in display. In the winter you might see them hunting flocks of domestic pigeons near towns and villages, but the attacks are often very fast and sudden, so not easy to spot.
Hobbies should be easier to see, but only from late spring till early autumn: finding a nest can be very difficult, so it might be better to look for large numbers of suitable prey (dragonflies, swallows and other similar birds like swifts and martins). The trouble of finding them will be worth it, I think, if you can see a hobby chasing swifts, or even gracefully catching dragonflies. Just imagine trying to catch a dragonfly by hand ... but even young hobbies that have been flying for only 4-5 weeks make it look easy.
-------------------
The other raptor that would be really interesting to know if they are in your area is the
peregrine (Sokół). In the UK almost all peregrines nest on cliffs or buildings, but in Central Europe there are some that nest in trees, using other birds' nests. Maybe have a look for ravens' nests in tall trees and electricity pylons... if you find them and can spend time watching them, there's a very good chance you will see some interesting stuff over the next several months: flying displays, hunting, chasing away other peregrines and so on.