Selling and marketing expenses (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2022

Dec. 31, 2021

Selling and marketing expenses

Schedule of selling and marketing expenses

	Three months ended	Three months ended
	March 31, 2022	March 31, 2021
Advertising costs	(55,151)	(64,444)
Employee benefits expenses	(1,442)	(283)
	(56,593)	(64,727)

	2021	2020	2019
Advertising costs	(266,906)	(164,929)	(81,814)
Employee benefits expenses	(3,261)	(827)	(366)
	(270,167)	(165,756)	(82,180)