I would also suggest putting a much smaller proportion of your savings, if any, in Premium Bonds. £5K of £50K is 10%. You probably won't win something every month, and there's no guarantee that you will match the best interest rate you could get elsewhere, but you can get it out within a few days if you do proceed to try and buy a property or if you need the money for other reasons.
But do also look at where your savings are at the moment and consider all the other options - ISAs, cash savings, and longer term stuff if you're not planning or able to buy a property within the next few years, like investments and pensions.
I bought my first premium bonds just over 2 years ago - £100 - April 2024 was the first eligible draw, and added small amounts here and there - I'm just about ahead of what I could have earned in a savings account but that's a matter of luck, and on my £4K plus now I may or may not match what I could have got by putting the money in my best paying ISA or other cash savings account
Here is a lively thread where Mumsnetters with PBs chat and report their winnings or lack of winnings, as they wish - you will see that a lot of these have the maximum investment but quite a few of us don't, and some are moving money out of PBs to other forms of saving.
www.mumsnet.com/talk/money-matters/5485318-premium-bonds-febmarch-2026?page=6&reply=151011232
Questions to think about?
Where are your savings? Do you know what interest rate you're getting and is it the best you can get that otherwise meets your needs? (accessibility, bank branches/online, restrictions)
Your income and tax status? Are you entitled to a personal savings allowance (basic rate/higher rate tax payers)?
Are you aiming to buy a property and if so, what prospects/timescale do you have to do so?
How accessible do you want your money to be?
You can divide your money between different types of savings
Research ISAs - stocks & shares and cash - and other types of savings accounts
There is lots of information (as well as forums) on Money Saving Expert.