Link to blog posts are routed to index page

Good day people,

I have a question. I have a page where 5 excerpts are showing and after every excerpt there is a href with a link (a read more) which should link to the entire post (and I want this post to be shown in another template). In this href I use for example “?p=156” to link it to the blog post, but when I use this I get routed to the index.php and I can’t find anywhere how I should make it that the link would go another template instead of the index.php.

My index.php is the landingspage for a visit to the website. I haven’t got a the_loop on it but a couple of variants, which show a selection based on categories for blog posts, but the example above isn’t one of those categories I want to be shown on the landingspage. So I want it to be shown in another looking page …

I hope it is a bit clear and that someone can help me, because I’m a bit clueless at the moment.

With kind regards,

Wesley