Beekeeping is a fun hobby. If you are quick to give up it probably isn’t for you as there are many reasons your bees might not make it through winter.
My neighbor 2 houses down had 5 hives 2 years ago. Brand new beekeeper. Mites took control and killed all 5 hives over winter. They simply gave up. Had I of known they had bees I would have offered to help and probably could have saved them. It’s not uncommon to lose bees over winter. I recommend some type of control for mites and hive beetles.
2 hives minimum to start. If worse comes to worse you can pull resources from the other hive, make splits to increase number of hives, etc. I know someone that went from 25 hives to over 150 by seasons end from just splits. They could have had more, but couldn’t build boxes fast enough.
It’s a big cost savings if you can build your own boxes. Time is money too. If you don’t have the time to build them you might opt for some pre built boxes for an added expense. It’s a big bonus if you have a spouse or friend that can help.