If i only play one table, i can see other player's every hand.

i can see how they palyed. i can know previous history and more specific information.

but if i play multi-table, i can't see those things.

i only can know my hands history.

when i play multi-table, i am nervous because i can't observe other player's play

some people don't care about this. but i am nervous.

Is it ok not to see other player's every hand ?