Current Indian bowling line up is good in all 3 formats and they have good back up bowlers as well so one bad game is not something to worry about. Indian team might come back strongly in the next game.
You don't need to find any new bowler but encourage top order batsmen to learn the skill. After all nowadays we expect bowlers to contribute with the bat too, right? so why not batsmen should learn a extra skill ? They are bowling or not, it doesn't matter as its depends on the situation . Sometimes having a extra bowler comes very hand, lets say your regular bowlers having a bad day then part timers could slip couple of overs.
For the second ODI also, India have gone with the same bowling lineup. And this time, they seems to have got a good start. Both Jasprit Bumrah and Mohammed Shami are bowling with good line and length.
I agree with you on the second part of your post. Nowadays we expect the bowlers to chip in with the bat as well. As we saw during the last match, Navdeep Saini and Mohammed Shami made noticeable contributions with the bat. But then we can't expect genuine tail enders such as Bumrah to do the same.