Is it a good idea to open new Fixed Deposit every month for retirement for next 10 yrs ?

Hi

I am 42 yrs old and I am planning to open new Fixed Deposit of 25K every month for the next 10 years for my retirement planning. Is this a good move?

I have seen the Mutual funds pas t performance for the last 1 to 3 yrs and not sure if this is right option as the returns are fluctuating and the top/best mf’s list keeps on changing every month or so.

Please advise.

Thanks

Surendra