Anything you read in the papers is already priced into the markets.
Absolutely no-one knows what the markets will do short or long term. If many people think there is bad news coming, the market drops before the bad news happens (e.g. the US debt ceiling was weighing on the markets last week BEFORE the possible bad news of no agreement and the market moved down, then an agreement was reached and the markets bounced up).
Investing in the stockmarket is not for everyone. If it worries you, then it is better to avoid investing that way and shop around for the best rates in the bank. A jittery or falling market shouldn't give you sleepless nights. If it does, don't get involved. Markets always fall and always rise. There have been a crash every decade or so for the last 40 years (1987, 1999, 2008 & 2020). There will be more, but we will never know when. The nature of a crash is that it wasn't predicted by most people (and there is always a minority of people predicting a crash at any one time).
I invest for my retirement, and nowadays I invest monthly. This is known as price cost averaging. So, if the market falls, I get more shares for the same money that I did last month. I used to invest lump sums but that style didn't suit my temperament.
https://www.moneyboxapp.com/learn/investing/article/what-is-pound-cost-averaging
I am comfortable with this approach - but as I say, investing in the stockmarket is not for everyone. Where you put your money (bank, property, shares, premium bonds) is really an individual choice about what suits your temperament and risk apetite.