Check out @Mayer's video reviewing all the beginner Mechs and listing all their pros and cons.
Here is the link to Ultimate Mech Arena Guide: Pros and Cons of every Mech! Part 1.
If you wish to become an Official Mech Arena Creator and receive benefits while your channel is growing, check this page: https://plarium.com/landings/en/mech-arena/content-creators
The respective team will review your application and get back to you via email.
If you have any questions about the game, feel free to contact the Support Team. We'll be happy to help you!