Is this a false widow?

[Blahblue]

And if so do I need to do anything? There are LOADS of them in my garage.

I’m not really that scared of spiders, and they are just minding their own business. I just didn’t know if it was just a normal thing now or if I should try to get rid of them somehow.

Looks like it to me. Its a bit of a grey squirrel. They dominate our spiders, it's not native. They explode in numbers and I know many people who have ended up on v strong antibiotics after being bitten and lots have been.
I kill them on site.
We had never seen any in our house until one year we found 10!! And tons of babies all setting up house.

it definitely looks like one.....set fire to the garage!

Yes definitely I just happened to be googling one that we pictured from the local park and that's it. They are not aggressive unless pressed/ accidentally touched and squashed but can give a nasty bite and cause reactions in people who tend to also be allergic to bee stings. I would get rid if possible to be on the safe side.