Can I paint miniatures with just a brush

Hey guys I’m having a really tough time and have to move out of my house for a short time. I normally make custom hotwheels and models but those take airbrushing and I can’t do that where I’m going. My hobby’s are what keep me going in life really and I’m hoping I can paint some and make them look good without to much fuss and money. I spent a lot on recent airbrush createx paints so I’m hoping I can use those. Just to add I don’t know much about mini painting or warhammer but it looks cool and I enjoy any horror type characters to paint

Update: got some world eaters and stormcast eternals to paint and am loving it. Thanks so much for the support and encouragement