Confused about rent difference

Hi guys. I am new ro this foeum so hopefully I'm doing this correctly. I've been in search if an answer and can't seem to find the right information. I apologise if this has been asked a million times or the answer is obvious. I'm a bit silly.

I am really struggling with where i live due to my disabilities. I'm no longer allowed to drive and im in a small village so public transport is a bit rubbish. I'm looking to move into the city centre or nearby so i have more things on my doorstep. I am however struggling with how this will work. The rents there are more expensive than where i am now. I feel i can afford it but the amount is outside of my rent entitlement by about £250. So I'd be paying that £250. I'm fine with that, im just confused how it's paid. Currently i get my rent paid direct to the landlord as i have issues of blowing money and not paying rent during relapses. It's so much better this way. From what i can gather, i can have my rent entitlement in a new place paid directly to the landlord from my UC, but I'd have to pay the remainder myself directly. So for example on a £750 place, £500 will leave my UC directly, and I'd set up a direct debit for the £250. Is this correct? Is there not a way of me having the full £750 taken from UC? It seems counter productive to have a system set up to help people with budgeting issues but them still being responsible. I can't seem to find anywhere that it can be done this way. I'd be grateful for anyones input. Thank you 😊