I use the logitech g213 (costs like 70 dollars max depending on where you shop) and it is pretty good. It isn't fully mechanical but it still feels good to both play and type. there are buttons on it that allow one to control volume, keyboard rgb on/off, pausing/resuming videos or music, as well as skipping and going back. It also has a button that allows you to block the input on certain keys (like the windows key) so you dont accidentally exit a game by pressing something you dont wanna press.
you want it with or without numeritos on the side?
Buy the cheapest one with the switches that fit you
Logitech G413, i like it simple.
Keyboards are not difference makers, buy a second hand keyboard or even a Chinese one and save money so that you can spend more on a quality headset/mic or a mouse.
I was lucky when I got my keyboard. I have the Razer Huntsman Tournament Edition and it was like £110 but was on sale for £44 when I got it
i use the logitech g910 but i think it costs more then 100. Idk i got it from a friend who was upgrading.
I have an Apex Pro TKL, it's probably the best mainstream/big brand keyboard out there, but honestly as keyboard makes very very minimal difference when it comes to CS, just buy one with the switches you like.
Find a couple of good keyboards that are in your budget range and compare them until you find out which one is better for you/is better value for money. Anything mechanical is good enough for CS.
Some good ones from the top of my mind are Logitech G413 and HyperX Alloy FPS, but look for sales as you can find some really good deals.
I'm still personally looking for a proper SILENT tactile low-profile TKL mechanical keyboard, until then I will prefer rubber domes. Another problem is that if you play games where you need to double tap n stuff, I found even with brown switches I had to increase the double tap delay in order for it to register as a double tap vs my rubber dome. I suppose only MX Reds and alike are good if speed is a priority but it also doesn't feel great to use either.