I got broken in to in December and I was terrified. Some of the things that helped me are:
Internal CCTV - cost £40 and links to my phone so if I get alerted, I can tap in to my phone straight away and look.
Alarm - you already have this, I didn't.
Hive light bulbs - they come on at random times set by me and make it look as if we are home.
Tv stimulator - we have this attached to a Hive plug. It switches on and creates a flashing light that from outside looks like the tv is on. You can also add a radio in to come on at the same time so it sounds like there's someone in.
Outdoor cctv - cost me about £300 as my dad fitted it but it's definitely a deterrent.
Stickers - advertising I have CCTV on 24 hr recording.
A 6 ft fence around the house.
Move anything pricey you don't use regularly in to the loft, for example, heirloom jewellery etc. Put spare car keys in the loft too.
The way I feel now after it already happening is, if it happens again, it's fine. I have insurance. I replaced the items lost. Nobody died or got hurt. If they come again, they'll take the same things and I'll just claim on insurance again. The thought of my home being intruded is awful but at the end of the day, the things they took are just things and can be purchased again ❤️