Mine is a 2015 Lenovo X1 Carbon. It's been signaling "low memory" for months (there's no way to expand RAM), forcing me to close programs in order to browse. Now it won't resolve any browser, although it does connect to the Internet.
I need a laptop, but computer prices are so high right now due to shortages, etc.
What to do?
Based on the specs I found online, this has a 14" screen, can support a max of 8GB ram, has 256GB, and has an Intel I5-5300U processor.
At Best Buy (just using them as an example), a system (HP) with 16GB memory, 15.6" screen, Intel Core i7-1165G7 (more than 4 times as fast as the other processor, based on benchmarks), and 512GB SSD (twice as much) is currently on sale for about $689.
So... the question is, how much are you expecting to spend for a new laptop? 8GB systems are around $400-$500 these days, with faster CPUs, but as was mentioned applications these days are taking up more and more memory.
Best Buy also has refurbished laptops with 16GB memory for as low as $400, if you choose to go this route (I have bought refurbished items in the past without issue, but not everyone is comfortable with going that route).
The other (temporary) thing you could do is run one of the many "PC cleaning" software that can analyze your system and remove (or at least identify) all kinds of things that are causing you issues. That might be a first step (if not already taken).