I just bought a bmx bike with serial numbers CIC29J0897 + trust21BI-2200 what type of bike is this?

Very few bikes can be ID'd by serial number. It's not like a VIN on a car, any manufacturer can use any scheme they want. If brand/model have been removed from frame it may be stolen. Post serial # and multiple pics on a BMX specific site with anything you know about the frame. You can also try a Google search for "BMX serial number HBK". For more info see my tip: How to determine the year value etc of your bicycle

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What type? Haro bikes are BMX bikes. If you mean model, try posting multiple pics of the bike/components on a BMX specific site. I know of no way to ID a Haro model (or most bikes) by serial number.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Very few bikes can be ID'd by serial number. It's not like a VIN on a car, any manufacturer can use any scheme they want. Post multiple pics on a BMX specific site with anything you know about the frame. You can also try a Google search for "BMX serial number CIC." For more info see my tip:
How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Sure, I'll identify it with a high degree of certainty. It's likely a stolen bike. If not then someone did a lousy repaint job. Either way it does not matter what it is, because any value of a particular brand is gone, and parts are pretty much universal.

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Not possible. Find some BMX sites, post detailed pics of bike and components. Not all that important, though.
How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Often not possible to tell from serial number, but certainly this is not the best site for such info. Google Free Agent bmx serial number. Alternatively search for Free Agent bmx, and post a pic on the site of your bike, see if anyone can ID year from paint/decals/equipment.

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try www.google.com
typing in BMX and the model number
see what you get

https://bikeindex.org/serials

It looks to be an English bike from the view the steertube

If the head badge indicating the brand and the decals indicating model are gone it's either repainted or stolen. The serial number alone is little help, but may be a Mongoose ("Google bike serial number cho"). If you are really concerned try going to a bmx site and post detailed pics, but it's not very important. Parts for bikes are universal, and a bike without any ID on it is worth much, much less. For more info see my tip:
How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881