need recommendation on smartwatch that can use standalone IMs

I want to find a smartwatch as a gift to a friend, so that in case of cellphone(oppo reno 11a) broken/missing, we can still communicate using wechat/line/whatsapp/kakaotalk on the watch.

The apps(after the initial login) must be able to use(send&receive) without phone AND without esim, just using wifi. Is that possible and any recommendations? Thanks!