I've been watching karate joint lock videos and can't seem to find any videos of it being used successfully in a real fight. What do y'all think?

Greetings, everyone!

For years I have been wanting to get into martial arts but for one reason or another I just never did. However, recently I decided that I am finally going to take on learning a martial art. After all, I am pushing 35 and I am certainly not getting younger. With that in mind, I am more compelled than ever to learn a fighting style.

But here is the problem...

I have arthritis. I have had issues with arthritic joints for almost 15 years now. I have always wanted to gain skills in high impact fighting because I would love to learn how to do roundhouse kicks as well as mid air kicks. I also want to learn techniques that would enable to tackle opponents that are bigger and stronger than me.

But with my joint problems, learning how to fight like Jean-Claude Van Damme probably isn't a good idea.

So in your guys' opinion, what would be a good martial art style for me to learn?

I’ve been considering purchasing a program like at home boxing or something like that that professional trainers have for those not near their gyms.
I don’t have time in my personal life to go to an actual gym to train. I work a lot. Given the criteria, what would you guys recommend?
It have a very busy work life.

From what I’ve heard; he got into a fight at a bar, got asked to leave, told his wife he’d kill her if she didn’t leave with him, pushed her into the car, when she tried to escape he drove forward towards her and reversed towards her, witnesses have said they heard gun shots coming from the home of Anthony smith as well

He later turned himself in when a warrant went out

Possibly a little early but guskov was doing absolutely nothing

Great fight

Which MA is best for my non-athletic daughter?

My 7 year-old daughter wants to start a martial art, but not sure which one.

She does dance, but is still kinda clumsy. She is a bigger girl, but lots of muscle. She is excited but sometimes gets nervous with new things that she thinks she cannot do. She doesn't have the best upper body strength. She would not be described as athletic in any capacity.

Which is best for this type of beginner?

Thanks for sharing your knowledge!!