How to treat impotence well?

Patient's question:

Age
Detailed medical condition and consultation purpose: Last year, I experienced intermittent erectile dysfunction during cold weather. I used Gu Ben Yan Ling Dan, which slightly improved the condition. Currently, I have good nighttime erections, but I cannot achieve erection during intercourse or insert into the vagina. Since spring until now, I have been taking Tai Ji's Shen Bu Yi Shou Jiao and Liu Wei Di Huang Wan, and my sexual life has been normal. However, since October, it seems that the medication has been ineffective. I hope the expert can provide guidance (a cost-effective solution).
Duration of the current illness and persistence: Over a month
Auxiliary tests: Prostate examination was normal
First follow-up question: Dear doctor: I am ready to adopt your solution.

Doctor's answer:

Hello, practicing this method for a long time can warm the gate of life and ministerial fire, nourish essence and kidney, replenish the brain and marrow, making one energetic, light on their feet, agile in movement, and treating sexual dysfunction, impotence, premature ejaculation, lower back pain, frequent urination, insomnia, forgetfulness, nocturnal emissions, and slippery sperm. If combined with Internal Cultivation Qigong and standingQigong, the effect is even better.
　　I. Rub the Yongquan: Sit in a cross-legged position, warm your hands by rubbing them together, then place your palms firmly against your soles. Rub from the heel along the ankle joint to the San Yin Jiao line, moving back and forth 20-30 times. Then, rub the Yongquan point with each hand 81 times. Focus on the Yongquan point, and maintain a slightly rhythmic hand movement.
　　II. Massage the Shen Shu: Place your palms on the Shen Shu points, with your middle fingers aligned with the Ming Men point. Massage in a circular motion from top to bottom, from outside to inside, 30 times. Focus on the Ming Men point. Those with existing kidney deficiency and lower back pain can increase the massage frequency as appropriate.
　　III. Shake the scrotum: Lean your back against a solid surface and adopt a semi-supine position. Use one hand to support the penis, while the other hand uses your index, middle, and ring fingers to hold the lower part of the scrotum. Shake up and down 100-200 times, then switch hands and shake again 100-200 times. Focus on the Dantian, gradually increasing the force. After mastering the basics, switch to using one hand to pat the scrotum up and down 100-200 times.
　　IV.： One hand is placed on the Hui Yin point, while the other hand is placed on the Qu Gu point with the little finger side. Both hands rub the testicles and penis simultaneously about 100 times, then switch hands and rub again about 100 times. Focus on the Dantian, gradually increasing the force.
　　V. Lift the Yang Gen: Place the labor point of one palm on the Dantian, while the other hand grips the penis. Lift and pull it up, down, left, and right 100 times. Relax your focus, maintain independence and vigilance, and keep a clear mind.