What are the treatment options for varicose veins in the calves?

Hi doctor,

I am a 37-year-old male. I do not smoke. I do not drink or use drugs, take no medication, and have no allergies. My body fat is 11 %. My blood pressure is 121/79 mmHg, and my resting heart rate is 48 BPM. I have varicose veins in both of my calves. The veins are not so severe as they cause me no pain or discomfort, merely ugly to look at. I am a keen outdoorsman. I enjoy sports such as cross-fit, running, weight training, mountain biking, snowboarding, and hiking, and the varicose veins do not affect any of these activities. My condition is such that the valves in my groin and in the back of my knees are not working as they should, and my doctor has advised that I wear full compression tights when carrying out these activities, which admittedly, I do not always wear as there is no discomfort or pain. I previously had surgery over ten years ago where I had small incisions in the back of my knees and had the veins stripped out. But since the operation, I have had more varicose veins develop in the same area of my calves, but nothing above the knees that you can see but the ultrasound device detects the blood flow falling in both sides of my groin and behind both knees. I now live abroad and saw a doctor who has booked me in for another operation to strip the varicose veins again. My question is whether this operation is safe to do a second time. I have concerns that it is the valves that are broken in my groin and behind the knees but have been told that the valves are not repairable. Will a second operation to remove more veins from my legs be pointless? Or even dangerous? I presume the problem will persist, and the remaining veins will eventually become varicose when the valves do not close after my heart pumps the blood through. Surely, having fewer veins is not the answer? The main concern I have is that this second operation will affect my sporting abilities, leading me to fatigue faster with less blood flow to my muscle tissues, worrying that my muscles will cease to operate effectively during endurance and load-bearing sports like heavy squats and heavy calf raises in the gym as well as hiking carrying weight. Will the muscles cease to be stimulated and hinder growth with less blood flow when training? In a nutshell, do you recommend I go ahead with this second operation based on it being more of an aesthetic? Or will stripping the veins a second time have no effect on my muscles during extreme sports? Why cannot the valves be repaired with today's medical advancements?