Simplicity is a good quick start…
Bad guys are looking for a quick easy score…
Security stickers on doors and windows or yard signs are a very good deterrent. …
Doors are probably the weakest part of a home. Ideally you should reinforce the frame , you may be able to remove the inside trim and fit good hard wood boards in the cavities, and then use 4 inch screws through the hinges, and as stated earlier use solid corp doors. Any door window should be small and high. I like double cylinder deadbolts on doors that may have side glass. I’m looking at ballistic film for my sliding glass doors and basement windows. The banks in my town have gone to ballistic film on their large windows-- because it is cheaper than ballistic glass.
For most of us, these have to be done in steps… but we have to start someplace…