I dont know to which weapons you want to use it, but I highly recommend https://cfg.tf/tools/crosshairs/ . From there you can choose to which weapons you want to use a crosshair that has a circle around it. (Or something else...)

Crosshair circlevalorant

Vishay manufactures one of the world’s largest portfolios of discrete semiconductors and passive electronic components that are essential to innovative designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets. Serving customers worldwide, Vishay is The DNA of tech.®

Circle crosshairValorant copy and paste

Vishay manufactures one of the world’s largest portfolios of discrete semiconductors and passive electronic components that are essential to innovative designs in the automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets. Serving customers worldwide, Vishay is The DNA of tech.®

im kinda new to this custom crosshair stuff i was using the default ''none'' one for most of my playtime but i dont like it anymore,can someone help meee