As a new member, you won't be able to post pictures on the forum yet, regardless of your activity level. It's just one of the rules here. In the meantime, you can try hosting your image on an external site and linking to it in your post. This can be a good workaround if you need to include an image in your post.
Additionally, it may be helpful to check the forum's guidelines and rules for new members:
Newbies - Read before postingYes I am following your advice very carefully sir. I have read the rules for newbies, and I understand that to become a Jr member I need to have 30 active days on the forum and make 50 useful posts
If I want to post a picture on another forum, the amount of time it takes to upload will depend on the policies of that forum and the speed of its servers
Now you have become a Jr Member after the first merit you get. congrats on your first merit.
It needs to be underlined, there is no specific place to look for merit. Merit does not need to be searched for, start improving the quality of posts even better than before, when people think your posts are of high quality, merit will easily come to your account.
Try to get rid of old habits like making useless posts and reduce the number of posts containing reports from Bounty Campaigns. You will not develop if you only focus on the Bounty Campaign, suggestions from @FatFork are very helpful for your development, especially in increasing your rank.