I imagine it can be very hard if you feel
isolated and without support but it’s true that many people have no idea what to say or do, so don’t. They don’t say anything, do anything, steer clear. And in that situation it can be very hard also to ask. But before you give your friends up as a bad job, it’s worth a try. Ask for something clear and direct that doesn’t need interpretation, pick up shopping, mow a lawn, offer a lift.
And time with a really good counsellor is time well spent. Almost everyone diagnosed with cancer will experience some anxiety, sense of loss, fears about mortality. Even if friends or loved ones are willing to talk, they are often too close or too uncomfortable about those topics themselves to help much. As @June1952 mentioned, your GP can help with a referral. Best wishes.