I am not good at glue-ups. I live with my mistakes. That said, I have tried some tricks with varying degrees of success:
* Wipe the clamped and glued joint with a wet paper towel immediately after clamping.
It works, but I stopped doing it when respected woodworkers told me that it would get water into the joint and weaken it as a result. Worse yet, they told me that even a little remaining diluted glue can still cause trouble with staining and finishing. After all that, you have to deal with the raised grain, and may have caused other issues for yourself.
* Wait for the glue to partially harden, then scrape it off "easily" with a sharp tool such as a scraper or chisel.
The problem is timing it just right. Often I find that the glue looks hard and the wait time seems right (say, a couple hours), but then there is a liquid glue core that spills on the project and makes a worse mess. Sometimes the glue gets too hard and does not come off easily, usually in difficult to reach corners, and usually resulting in damage to the project if you attempt to remove the dried glue.
* Carefully tape each side of the joint before gluing. The squeeze-out comes off with the tape.
I tried this with blue tape, but the tape did not come off easily. The glue stuck the tape to the wood. I could try some other kind of tape, like electrical tape, maybe. Whether it works or not, the taping increases the overall glue-up effort.
* Carefully tape or protect the inside of the joint, then finish the rest with a non-stick finish before the glue-up. The squeeze-out won't adhere to the finished areas.
I have not tried this yet.
* Acquire enough experience to get clamping pressure perfectly right.
I can dream. This really comes before getting the amount of glue right. If you get the amount right, but change the clamping pressure, then you may have to adjust the amount of glue. Many (most?) woodworkers apply way too much clamping pressure for common PVA wood glues like Titebond I, II, and III. Most woodworking clamps make it too easy to apply too much clamping pressure.
* Acquire enough experience to know the perfect amount of glue and spread it exactly where needed, to minimize squeeze-out.
I can dream. You don't want to starve the joint, but you don't want to overdo it, either. Perhaps there is a certain zen to glue-ups.