3 scars on my face. Can they be removed completely? (photo)

There is an ideal window if time for initiating treatment of just about any kind of scar from any cause, be it from acne, trauma, surgery, infections (such as chickenpox), etc. That window is between the end of week four after the initiating event and the end of week twelve. By the end of week four, the wound has healed sufficiently to withstand treatment and the end of week twelve is when the scar is considered "mature."
Scars treated early on there is at least a possibility of erasing or very significantly improving its appearance. For mature scars, realistic improvement using any treatment or combination of treatments currently available range on the order of 50-80% improvement in overall appearance.
Subcision, which I have been using for thirty years, has a proven track record of safety and efficacy in all skin types for elevating and smoothing Indented scars from all causes.
Professionally performed manual microneedling, which I have been performing for a quarter of a century, has a proven track record for safety and efficacy in all skin types for improving superficial surface scar color and textural irregularities.
In your quest for the best treatments for your scars, you will no doubt be offered a host of expensive, supposedly "next big thing" bells and whistles fraxel lasers and RF gizmo treatments. You would be wise to exercise a whole lot of buyer beware caution, since the hard science to back up the use of these often here-today-gone-tomorrow fancy-named gizmos lags well behind the heavy duty marketing hype and social media influencer buzz to promote them. Hope this helps and best of luck.