Stop worrying. Stop overthinking. Stop being pessimistic. If you trust the Almighty as you say you do, then put in your best effort and leave the rest to Him. He will work it out for you according to His timing. Not yours.
The words that imam sahab told meh during the Isha nimaz
"Prophet Muhammad saw said if you accidentally notice a women that will be forgiven by Allah but if you notice a women more then 1 time thah will not be forgiven "
So,in every situation we should be obedients