Ok, this is a subject that is super tricky. Why? Because this is at the deep end of the pool when it comes to understanding more than just the "milk and bones" of the Bible.
1. In simple, if you are a strong believer in Yeshua, you fight your flesh and you love G-d and Yeshua, then honestly, don't sweat it. Keep working out yourself and keep loving others and pushing for truth!
2. I believe Ariel Cohen Alloro (an Orthodox Rabbi who believes in Yeshua) hold the best answer because of this a deep Kabbalistic root.
3. In short, G-d is One. (Sh'ma Yisrael Adonoy Elokeinu, Adonoy Echad). What does One mean? G-d is everywhere and in everything. He is not limited to a body, nor can He be only confined to one location. All that we know of Him, is little a grain of sand when it comes to the infinite wisdom of G-d. Now, if G-d is everything that like Psalms 82:6 and John 10:30 state, we can all be "Elokim" (not H-Shem the 4 letter Tetragrammaton). Meaning, we all have a part of G-d in us and EVERYTHING on earth has a part of G-d in it (simply speaking that is). So who declared or commanded anywhere that G-d is confined to "3 entities"? You know that Israel is called One with G-d? Moshe was called Elokim, angels are called Elokim, Avraham was One with G-d and even Joshua bowed down to the angel that G-d placed His NAME upon. So who or what limited G-d to these 3 entities? To limit G-d, destroys the power of G-d. The whole book of Deuteronomy which is part of the Torah is written in the tense of Moshe, not G-d. Because being "one with G-d" means that you are righteous enough, that G-d can use YOU as a vessel to "dwell" (partially in). That is why the body is called "The Holy Temple". You think G-d only dwelt in the Temple when there was one? So what does it mean to enter the "Holy of Holies"?
4. But......(lol I hate this part)....there is something powerful beyond measure with Yeshua NO DOUBT. Exodus 23:20 states that there will be an "Angel" that G-d would place his name on and Joshua (Joshua 5:14) bows to it. To bear G-d's name does not mean to BE G-d, but you emulate exactly what it means to be like Him (just like how Moshe's face radiated with G-d's presence), however, Yeshua is at an EVEN HIGHER LEVEL.
For G-d was in a bush speaking to G-d, so does that mean G-d is a bush because G-d and the bush became One? Or is G-d a cloud because He was the Clouds of Glory? (In fact nature holds a high level of spirituality because it comes from G-d more "directly").
This could go on, but I hope this sparks a thought. Remember, this doesn't hold much value, the works and love we express to all souls weigh much more than the argument of the Trinity....and if it makes people sleep better at night....to be honest...I don't argue it. No 2 people should ever fight about this because it is very complicated to understand. We have much greater things at hand.
However, when it comes to Jews...this can be a big road blocker and I understand why. The best argument, is Yeshua's own usage of Psalms 82:6 in John 10:30. To be called Elokim/G-d means a lot, but it does not make it the 4 letter Tetragrammaton. Yeshua never called Himself that name. But can I worship Yeshua like Joshua worshiped the Angel with G-d's 4 Letter Name on it? Yes!
Confusing eh?