1. I have 100% been where you were. You can go acupuncture, chiro, use muscle relaxant, massage etc and it will still nag you. But I'm back on my feet and hitting half marathons on a weekly basis now. The 'cure'? thanks to Covid lockdowns - 1 YEAR absolutely no running at all - then 1 fine day decided to resume running, viola! The nagging knee pain is gone - so yes, REST THOSE KNEES! But no single human is the same, what took me a year+ could be lesser or more for you.

2. You can do the One Punch Man routine, minus the 10KM runs. 100x sit-ups, push-ups and squats. <- I did that, got the V-line in under 3 months. The problem (for me) is not the quantity/reps, is the discipline to do it everyday. First month build up from 10x (serious ah, when you gemuk and just started, 10x already very sakit) to 30x to 50x, second month push to 100x. Fell off the wagon after 2 bouts of influenza, can't find the ooomph to kickstart again (malas le tu)  but 100% can be done at home, or the park, gym too if that's your thing.

anyhoo, keyword to fix your knee - REST - DON'T STRESS it 

What running shoe are you wearing? Serious

Hi people,

Seeking for your experiences on how to recover from knee and ankle injury from running. I know that I have to rest these joints, but it feels like it's taking too long to recover I feel bit scared.

Bit of background, I'm just half or 1kg overweight mid 30s. I run for health, no serious target or anything. Usually 30 minutes in the evening every 2-3 days while waiting for evening rush traffic to clear. Started this habit feb this year.
I might have pushed it bit too much for me when I try to run with faster pace last month. It has been like 3 weeks now with this pain.
It wasn't that painful in the beginning - just dull pain in front of knee and upper knee when I really strain it, so I try casual walk around taman, to my surprise it became worse lol. Now my left ankle is all stiffed up. 

And what other exercise I can do in the evening that doesn't involve walking?

in your case, here are some suggestions:
1. look into IT band tightness - use a semi-firm roller on the IT band, and see if it's also painful
2. the knee and ankle, are they both on the same side, on your left? maybe it's because of the injury that you use it less now it becomes stiff - try use heat soak or apply heat pouch along the outer side of your fibula (front outer side of the calf)
3. for stiff ankle, sleep with ankle wrap or socks, but make sure it's loose to keep it warm. Can do the same for knee
4. take a photo of the bottom sole your worn running shoes, checking to see your pronation and running gait, might need to decide between cushioning or stability shoes, or both if possible

a normal running gait would have center heel worn (slightly off center, towards the outer side), and then the worn mark extend towards the middle front
https://treadlabs.com/blogs/insoles-reach-y...ing-to-tell-you

i did this exercise together with a group of friends back in 2018. the pad was too high for someone of my weight at the time. permanent right knee injury after that. ever since then i cannot apply pressure on that leg, going up and down became a cautious endeavor.

all the doctors i consulted they all say only way for the gel between the knee to heal back is to loose weight and do exercises that doesnt apply pressure on the knees.

Go buy Joint Gout or Niao Suan Wan(Pil Urik Asid ) on Shopee.  Very good for reducing pain.

Curcumin supplement - try longvida version

Steponlego
have you injured that side of your leg before, like since childhood, and then it healed? including falling on stairs and landing on that side of your pelvic bone or backside?

heel strike isn't a bad thing, I heel strike sometimes, on purpose, but that's with a decent pair of cushioning shoes
good luck

This was actually my topic for masters. While curcumin is good for the joints - mediated by its anti inflammatory effects, oral route is the least effective way to get its benefit. The amount you have to consume is comically not feasible.
10 years ago I run daily and hurt upper ankle area due to the stress. After that I took caution not to push myself too far.

This recent injury is a cumulation of my bad mistakes of thinking that the injury was not so bad. Right now I walk 4km daily to office, that doesnt help with recovery too.

Also I might push myself too hard. Only run 2km before this, I doubled that to 4km probably too fast.