There's no new analogue TV out there anymore....
Any new model TVs you buy today, already has digital TV DVB-T2 built-in.

What benefits of digital TV? More channels, clear picture quality, some channels is in Full HD quality, with electronic programme guide (EPG) where you can see the current programme name showing on the channel you're watching. It's basically the features that you get on Astro (if you have) since last time, now you can get it on digital TV, and all these by using TV antenna (UHF) and it's free, no monthly subscription.

Basically, last time you used to know that using TV antenna to receive TV signals are those static that looks "snowy" and "lots of white dots on screen".
That's called analogue TV. Since 1 Nov 2019, analogue broadcast has entirely switched off in Malaysia, hence replaced with digital broadcast.

More info at https://myfreeview.tv/

Yes it supports digital.
As long you see DVB-T2 or DTTV Malaysia label on the product page or the TV, that means it is digital TV built in.

Yes. Make sure to use good UHF antenna. Refer to that myFreeview website to know more.