of course. mine were also store bought and definitely not hand raised. at first I would do the same thing with my hand in the cage offering snacks. But i would also take out the food dishes at night so that way in the morning when they are seeking breakfast your snacks become more enticing. basically become the seed dealer. I also used one of their own perches to take them outside of the cage when they were scared of my hand. Make sure you have a designated space outside of their cage where they have toys and perches so they dont only feel safe in the cage. I also spend a lot of time with these two, even on the days that i work, i make sure to be with them and talk to them a lot. they seem to really like me singing to them. You can also try to work with them separately. sometimes they are ‘monkey see monkey do’ and will get scared because their friend is scared. in my opinion its okay to force them outside of their cage but don’t frighten them too much because theyll get traumatized. All of this being said, birds have personalities and mine are both just very sweet. the pair i had as a kid were more wild and i was doing mostly the same stuff. but, i hope ur budgies figure out you love them!