17 R3, crashing while playing games, #2

Whenever I try to play games on PC that are high performance like Destiny 2 and Overwatch my laptop often shuts down randomly while playing completely, audio, visuals etc. Sometimes I can turn my laptop on immediately afterwards without any problems and sometimes I get this message: "This battery is temporary disable, please turn off the computer and Strike the F1 key to continue, F2 to run the setup utility". I sometimes put my hand on the keyboard to feel if there is heat, sometimes I can feel immense heat and sometimes it is just light heat and yet it still turns off. This still occurs even when I manually put the fans to max speed with hWinFo64 v5.22, when the fans are at max speed I don't feel heat from the keyboard yet it still shuts off. I have looked at numerous posts to see if I could solve this problem. My battery and charging cord have been replaced, a big problem I have is that my laptop has a partial broken spot where the charging cord goes, I usually have to angle my charger in order for my laptop to be charged. While gaming, if my laptop is in high performance my laptop won't charge even though it is plugged in and then a second and a half later it will charge. This constantly repeats, when the computer is on low battery the dialog basically pops up constantly and I am forced to quit the game because I can't do anything or have my computer die since I will have to pull the charging cord out. In addition to this, While the charger is plugged in but not charging, there are also problems of slow fps. I have ran Dell Support Assist and obtained all the new drivers and updated bios. There were no problems with scanning hard ware or any of the sort. As you can see, I have a bunch of problems but I really just need to fix the problem of my laptop shutting off during gaming. My games are all practically unplayable and I am out of warranty. Service Tag , I sent this laptop in to Dell when it had warranty but they never actually fixed the problems I had and made it worse infact. I am broke and can't afford a warranty, and don't know how to fix computers mechanically. I am really hoping there is a way to fix this internally if possible and will try everything. If it comes to the worst I will update my warranty but please instruct me on what precautions I should make in order to ensure that the problems are adequately fixed. Please let me know if you need further details, thank you so much for your time!