if I succeed the first vs if I succeed, can I

Some examples from the web:

• If we succeed in this first step, you can guarantee we can move on to the next steps towards Everest.
• If I succeed, I won't forget who to thank.
• If I succeed, George buys Fancie's with me.
• Only if she didn't succeed the first time.
• I voted against these regulations at the first reading and if I thought it could succeed, I would have tabled an amendment to strike out the common position.
• If I succeed in this, I think that it is abundantly clear that this debate is radically different from this afternoon's, because this afternoon everyone was, first and foremost, absolutely convinced of being in the right.
• If I succeed in making this place really fashionable, they may decide they have to move on, find a more sleepy hotel.
• "If I succeed," the money's still yours but you belong to me.
• If I succeed in the hit, I'm settled forever.
• If I succeed, I'll get one of the villas.
• If I succeed his company, they will help us pay my mom's hospital bills and my school fees.
• If I succeed, then, Kim Yoon Shik, you have to pick up the bow again.
• If I succeed, he'd leave Bom on the other side.
• And if I succeed with my work, your sister will never remember what's happened.
• And if I succeed in doing that, maybe you would go back with the thought that you could build on, and perhaps help me do my work.
• The problem for me in creating a perfect, safe world is that if I succeed, there's no place for a person like me in it.
• But if I succeed, Your career, your life...
• If I succeed in helping one person, I will be helping the greatest possible unit: one person's entire world.
• If I succeed in establishing the contact between the physician and the patient in a Way that fully excludes third-party interference,
• If I succeed in transforming her into a living-dead woman... who or what could stand in my way?

Some examples from the web:

• If I succeed, I won't forget who to thank.
• If I succeed, George buys Fancie's with me.
• If I succeed, I'll get one of the villas.
• "If I succeed," the money's still yours but you belong to me.
• If I succeed, then, Kim Yoon Shik, you have to pick up the bow again.
• If I succeed, he'd leave Bom on the other side.
• The problem for me in creating a perfect, safe world is that if I succeed, there's no place for a person like me in it.
• But if I succeed, Your career, your life...
• If I succeed, will you please try to get more on board?
• If I succeed, we'll meet back here
• If I succeed, will you please try to get more on board?
• If I let her succeed, the terrorists win.
• If I succeed his company, they will help us pay my mom's hospital bills and my school fees.
• If you succeed, then perhaps I can forget about this whole nasty business.
• If Grandpa succeeds, I can quit the store.
• If you succeed, I will release a hostage.
• Because you will inherit my failure if I don't succeed, and I wouldn't wish that on anyone.
• If I don't succeed, you may cut off my head.
• But even if I don't succeed, for whatever reason, you'll know because nothing changes.
• If I let her succeed, the terrorists win.