"put efforts" is correct and usable in written English.
You can use it to refer to the act of making a concerted attempt to do something. For example, "He put in a lot of effort to achieve his goal."
The SEO team put efforts into understanding our USP, our existing customer base and our market potential.
Tory-held North Warwickshire, Trafford, Dudley and Walsall are believed to be vulnerable to Labour, which has also put efforts into Dover.
Engineers have constantly put efforts into improving the precision of machining processes.
Recently, scholars have put efforts on the pertinent work ranging from developing traffic predictors to understanding human mobility and activity patterns.
Active BIM educationalists in Brazil and Australia have put efforts in identifying essential BIM skillsets for BIM education in their TEIs.
The summit, organised by the Education Foundation and the Department for Education, aimed to put efforts to improve education systems into an international context.
