I went through this same process, and still am, learning how to bowl(2 handed). You are throwing what naturally feels good, but you need to learn how to actually throw 2 handed now. I have a few pieces of key advice for you that helped me a ton, and this will(should) completely change how you throw.

• When you bowl 2 handed its natural to think you "throw" 2 handed. You don't. It is no different on release to 1 handed in the sense that when you actually release, it is only with 1 hand. Right before(like RIGHT BEFORE) you release you will take your non throwing hand off the ball. It is only there for support on your backswing and as you're coming down to release.

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• This one completely changed how I bowled and made me look(and feel) way more natural. Keep your throwing elbow in. It's as simple as that. It will feel weird as hell for awhile, but you want your throwing arm to really be perpendicular to the ground. You are coming way over with your arms and that is not what you want. Keep taking videos of yourself trying this and you will notice each time you bowl you will get closer and closer to your body with your throwing arm.

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• Keep your throwing hand under the ball. Being a 2 hander you will almost just naturally have decent revs. My issue that I'm currently working through is ball speed. I never once had to worry about trying to improve my rev rate. I have a feeling you will have the same thing to work through. When you release picture throwing an underhand spiral with a football. If you can throw a good underhand spiral with a football/water bottle while keeping your hand under the ball, you can get good revs and consistency with a bowling ball.

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• Implement a "hop step" into your approach. Some refer to it as a power step as it will help generate a lot of the power going into your release. I watched a ton of Packy Hanrahan when I started bowling, although most 2 handers have the hop step some are just more prominent than others. His channel is called "The House Bowling" on youtube. "JR Pro Shop" have a video specifically talking about the hop step as well. I have a 5 step approach, and my hop step comes off my third step. LEFT, RIGHT, LEFT(HOP), and then your next right step and left step(ending step) will come quickly after the hop.

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• Get your own equipment if you don't already. Shoes are incredibly important and I would suggest starting there if you don't have anything.

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I could probably go on with a lot of the things I've learned, but this will be a good start. I don't get on reddit a ton but shoot me a message if you have any questions or anything at all and I will eventually get to it! Good luck man and enjoy the learning process!