I, too, played Valorant and compared with CSGO, well the graphics and skills are to be compared, what I really can think of its highly competitive is APEX LEGENDS.but the thing is Valorant is way more addictive than APEX and so many wants to play and so does with bets.
So it really goes off the line when it comes to gameplays and other as such.
I hate Valorant for being too cartoonish and it seems that developers have done it just for money. And yeah, it's not so popular as CSGO and Fortnite, so betting will be a little harder (less choices for that) and of course less available (less books have Valorant at their services).