I mean this with the best intentions but if you need to secure a loan through a loan company instead of your bank I assume it's because the bank has assest your ability to repay the loan and declined it. If you haven't spoken to your bank yet then that would be the best option IMO. The salesperson only cares about making the sale and doesn't give af about your finances, they just know the easiest loans to get approved are from loan sharks.

I'm not saying you can't afford it but maybe take a step back from the situation and really assess, without emotion, if this is a wise purchase. Being in debt on a depreciating assest with ongoing expenses fucking sucks. Best of luck to you.