You will have to sign in to some of these sites to get the free patterns
https://www.freepatterns.com/cross-stitch
http://www.cross-stitching.com/free-cross-stitch-charts
https://www.dmc.com/us/free-patterns-5041/all-patterns-5042/free-cross-stitch-patterns-5044.html
https://www.crosstitch.com/free/
https://www.thesprucecrafts.com/cross-stitch-patterns-for-everyone-983827
http://www.free-cross-stitch-pattern.com/
https://cross-stitching.biz/category/free-cross-stitch-patterns/
https://craftfreebies.com/free_cross_stitch_patterns.html
https://www.cyberstitchers.com/free_patterns/
https://www.countryliving.com/diy-crafts/a6380/cross-stitch/
http://bettercrossstitch.com/tag/free-cross-stitch-patterns/
http://www.freepatternsonline.com/xspatterns2.htm
To design you own pattern
https://www.stitchfiddle.com/en