firstFirst, check that your belts are tight, on the x axisX-axis and the bed. ifIf not, tighten them.
secondSecond, grab the hot end and wiggle the gantry, and make sure it is not loose, if. If there is any play at all, tighten the eccentric nuts.
ifIf this doesntdoesn't fix your problems, check out this playlist iI put together for the enderEnder 3 v2V2, it should answer everything.
Ultimate guideGuide to the enderEnder 3 v2V2 -Technivorous