How can I improve my sketching and drawing skills as a beginner?

Get a simple 3rd class school art or drawing book from a stationary store and complete 1pg a day. 

Sample only/ for example you can get any book like this.
Gikso Art and Craft 3 – Activity Book for Kids Age 6 to 9 Years Old Includes Colouring Activities (English) - Reprinted - 2020 https://amzn.in/d/9XFIUon

Until you feel confident enough to start in a plain drawing book.

This gives a great motivation rather than started directly on white or blank paper.

Improving your sketching and drawing skills as a beginner requires practice, patience, and dedication. Here are some tips to help you get started: 1. Set goals and motivation: Define why you want to improve your drawing skills and set achievable goals. 2. Learn basics: Understand the fundamentals of drawing, including perspective, proportion, line art, value, texture, and anatomy. 3. Practice regularly: Establish a consistent practice schedule, even if it's just 15-20 minutes a day. 4. Use reference images: Observe and draw from real-life references, photos, or still-life setups. 5. Experiment with media: Try various drawing tools and media, like pencils, charcoal, ink, or digital drawing programs. 6. Break subjects down: Focus on individual elements, like eyes, hands, or facial expressions, to build skills. 7. Get feedback: Join a drawing class, group, or online community to receive constructive feedback and support. 8. Be patient: Recognize that progress takes time and don't get discouraged by initial difficulties. 9. Study others' work: Analyze and learn from the techniques and styles of other artists. 10. Have fun: Enjoy the process, and remember that drawing is a journey, not a destination. Remember, the key to improvement is consistent practice and a willingness to learn. Don't be afraid to make mistakes – they're an essential part of the learning process!