Where to put my cash? After NiSA is maxed

Hi I’ve been following all the guides but they tend to end at NISA Ideco etc So my NISA will be lifetime maxed next year IDECo max contributions and 5000万basically sitting in the bank. What are my choices to get the 5000 earning some more money instead of sitting in the bank. I’m only interested in low risk steady growth.

Once I max NISA should I be taking out and replacing?

Should I buy more funds in my regular tax account.

Just looking for a solid plan to retire in 10 years.

Thanks for any suggestions