I see people using a brake bleeder however some people tell me that I dont have to use them if I have a resovoir? I’m on a Compkart 2021 covert 3.0 for anyone who’s asking.
You can use tower when you have reservoir
Also bleed by removing caliper and let it hang under the frame and open bleed nipples
Or sucking the fluid via the nipples
I have several mountain bikes with disk brakes. Generic bleed kits that I have purchased from aliexpress had a fitting to fit the master cylinder on my Compkart. I use a syringe with that fitting to push oil back to the bleed screws on the caliper. I have also used a syringe on the caliper to draw fluid out, just keep the reservoir on the master cylinder full with fluid. I find both ways work but drawing out of the caliper is quicker.