Actually, in my experience on this forum, larger rewards tend to result in worse answers.

Knowledgeable people that are here to help are willing to help simply for the sake of being helpful.  You're welcome to voluntarily send them something to show your appreciation afterwards, but never required to.

On the other hand, when you offer money (or anything of value) then dozens of people that know almost nothing about your problem will run a google search and copy-paste the first thing they see. They'll just repeat stuff they've seen in other posts without any understanding of what they are saying or if it applies. They have no idea if they are being helpful or not, and are quite likely to be wasting your time, but they don't care.  If they get lucky and stumble across useful information they get free money, and if they don't then it doesn't cost them anything (but does cost you a lot of time and effort).  Frequently their advice can result in making your situation worse.

Furthermore, when you offer a large reward, it makes it clear to the scammers and thieves that you are feeling a bit desperate.  They will see that as an opportunity to try and take advantage of you.