Yesterday I sprained my ankle playing basketball, and it's quite serious

I actually heard the sound of ligament tearing when I sprained it
I'm usually very careful when playing basketball

Last time I sprained my left foot
This time I sprained my right foot, sprains have to be symmetrical

It's been about 30 hours since the sprain
I've iced it six or seven times during this period, and I kept my foot elevated while sleeping yesterday
Now it's still swollen like bread

The severity is about the same as last time
I feel this time will take at least half a year to recover
Whether it will be completely healed is unknown

I'm getting older, it seems playing basketball is no longer suitable
I need safer ways to exercise