The best laptop under 30 thousand is Lenovo ideapad 330 i with ryzen 3.
Display - In this you get 15 inch full HD Plus display.
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Processor - You get the Risen 3 2200U which is at 2.5 ghz. With this you get to see the Risen's Vega GPU.
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Ram and Storage - In this, you get to see 4 GB of RAM and 1 TB of hard disk, you can enlarge the RAM up to 8 GB.
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Battery - You get more than 5 hours of battery backup.
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Operating System- You get 64 bit window 10 with it anti-virus of 1 year and you get MS Office lifetime free in it.
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Port and Slot - You can see 2 USB 3.0 and 1 USB 3.0 Type C port in it. On 1 HDMI port and a multi-card, microphone.
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Audio - You get 2 * 1.5 watt dual speaker with Dolby audio in it.