routers

I use modem mode with a hub 3 amd my own tp link touter which is 5 years old single channel and no recent firmware is available since 2021 and it does have known exploits for my model version.

I was wondering if I do need to  replace my exisiting router for a better model, but would want one that will just plug in and go with no problems, perhaps Asus or netgear for example, one that will update  firmware automatically preffered,but  just a cheap one would do as long as it is secure, so any suggestions would be helpful.

Or If the risk is low, can I continue with my old TP Link as I have had no issues.