Lol use twrp and ask the porter if what guide u should follow
jhepoy dizon
Ask him
What recovery you use? Do u have nandroid back up u should have this because if something goes wrong you can restore
Yah
So you need a stock rom and flash it through odin
For more info how to fix boot loop watch ÿôutubê
Just google the name of ur phone
Example
Samsung s5 stock firmware
Oo nga dapat may back up po..
hanap kana bagong stock rom ganyan dn nangyari saking phone