What is going on with my car?

What is your question?

Ive been having an issue with my car overheating and when i open the hood and smoke clears theres coolant sprayed and dripping all over the engine within 15 minutes mainly in the front but sprayed everywhere even on the windshield i checked but couldnt find any leaks the second time it had overheated it squealed while pressing the throddle the harder id press the louded and faster the squeal would get so i turned off the car and coolant all over the engine again but now when i start the car it squeals and smoke comes out of the alternator right away so i dont leave it on, i dont know if its related but a day before the first overheat i had put a 14$ 5L jug of oil in the engine because i was short on cash and needed oil could that have caused all of this somehow?

What makes this problem better or worse?

Just starting car

How long has your 2004 INFINITI G35 had this problem?

Since wednesday oct 30th