Sometimes when I post a question about a game I get an answer but most of the times I get nothing,but I notice they're answering other questions.So now If I ask a question on a game and I get no reply and notice they're answering everybody elses I'll delete the game for ever and put them on my list to avoid all the dev games.
Well I asked a question on 1 game about 2 weeks ago and still waiting for a reply,but they can reply to other questions.
You do know that even though there are some developers who are active on this site, for many that is not the case?
They neither uploaded nor endorse their game being listed here for free. Also, even those who do have accounts here, this is not their site -- they may only interact with fans and supporters on their official sites, discord, patreon, and the like. Or only very rarely interact here.
You mention you might notice some answer other questions but not yours --- could it be you're asking the same question asked time and again which has been answered many times in the thread? Are you asking questions for content they don't wish to include in their game? or perhaps there is no answer to your question?
I went to one thread and see that three people, including yourself, are having problems with a game - but no one else appears to have a problem and so no one is replying to you. It's also a thread where the developer has only posted 2 times in over 3 months.
There are many reasons why people won't reply. There are many reasons why developers, themselves, don't reply.
Also, you deleting a game you got for free - without donating or paying a dime to the developer - doesn't hurt their feelings at all.