Which procedure would help minimize the appearance of fine lines and hyperpigmentation? 22 y/o (photos)

Botox is a useful tool in reducing wrinkles and fine lines, however, usually it is most effective at addressing dynamic wrinkles as opposed to static fine lines.
Facial microneedling, also known as microneedling or collagen induction therapy is a fantastic way to address both of your concerns. The process involves the use of a device with tiny needles to create controlled micro-injuries in the skin. These micro-injuries stimulate the body's natural healing response, leading to the production of collagen, a protein that provides structure and elasticity to the skin. Increased collagen production can help improve skin texture, reduce fine lines, and create a more youthful appearance. The procedure also promotes the turnover of skin cells, leading to a fresher and more radiant complexion. This is helpful in addressing concerns such as hyperpigmentation.
It's also important to maintain a balanced skin care routine to support the effects of the treatments. For example, using topical prescription retinoids, such as tretinoin, promote cell turnover, stimulate collagen production, and fade hyperpigmentation. Retinoids are effective for reducing fine lines, wrinkles, and hyperpigmentation. They are often used as part of a long-term skincare routine.
There are several other options that would help address your concern, such as chemical peels and laser therapy. Considering your young age, to decide what would work best for your skin, I would suggest speaking to a specialist who can guide you and cater their care to you specifically.