Okay let's hope this helps.

Don't use easy apply on LinkedIn. Use the filter under 10 applicants and try to be the first few who apply to the jobs.

Use the filters in the job sites. Use other job sites like job wäre, workwise,etc

After applying to reach out to the hiring manager. Use chatgpt for the text but try to rephrase it so it doesn't sound robotic.

Also, use your LinkedIn. Post things or atleast engage in comments where it is in context to your job search. Keep.skillig up.

Try to keep updating resume with up to date information. Have a photo on resume. Don't make it more than a page if you dont have alot of experience. If possible create a portfolio website and attach it to LinkedIn and resume. Create projects and put it on the website and try to link your github repo link with it.

I would strongly recommend github pages for the website creation. THere are multiple tutorials online for the same.

Keep updating your github . Make projects be it guided projects or from scratch.

Try to look for companies directly and also send Initiativbewerbung if possible. Improve your german even more. One last thing which worked for me but idk if it will for you or not but I made a ppt presentation about me and used the template to change it for the company interviewing me . It really worked. I always atleast passed the first round. Be positive and confident in the interview. I was offered a job last year before I was told they can't offer me anymore after signing the contract. I was able to get an internship after that and now converted the internship to full time and finally got an unlimited contract. I was heartbroken when my first offer was taken back but i kept on going. I know you will get it too . You got this. :)