"we shall take a walk" in this sentence can we use "should" like "we should take a walk" ? if both are deferent then what is the defense ?

we shall walk: हम walk पर चलेंगे। it's certain that they hv decided to go for a walk... we should take a walk: हमे walk पर चलना चाहिए। it's a suggestion, they did not decide yet but giving suggestion for a walk

Shall sentance: We are going to do that and it's simply walk as a regular day to be good Should sentance: To be healthy or good ( it's about compulsory talking). That's all.

We shall take a walk- हम सैर करेंगे (the person is saying to other that they will/shall go for a walk, not giving advice) We should take a walk- हमें टहलना चाहिए(advice)