Dissemble

Conceal or disguise one's true feelings or beliefs.

Poker also requires analytical skill, but above all it requires skill in bluffing and dissembling.

[Lexico]

https://www.lexico.com/definition/dissemble

You could therefore say:

He’s dissembling! He wants you to believe that he’s less skilled than he actually is.

Dissemble

Conceal or disguise one's true feelings or beliefs.

Poker also requires analytical skill, but above all it requires skill in bluffing and dissembling.

Lexico

You could therefore say:

He’s dissembling! He wants you to believe that he’s less skilled than he actually is.

Dissemble

Conceal or disguise one's true feelings or beliefs.

Poker also requires analytical skill, but above all it requires skill in bluffing and dissembling.

[Lexico]

https://www.lexico.com/definition/dissemble

Dissemble

Conceal or disguise one's true feelings or beliefs.

Poker also requires analytical skill, but above all it requires skill in bluffing and dissembling.

[Lexico]

https://www.lexico.com/definition/dissemble

You could therefore say:

He’s dissembling! He wants you to believe that he’s less skilled than he actually is.