Hi, First, please select "Writing Feedback" forum for all IELTS topics. Second, you need too have a meaningful topic in the subject field that describes your essay when you make a post. These are forum rules and please follow them in your next essays.
I am writing this letter to notify you that I won't be able to take part in next week's practice sessions as well as qualify sessions which are scheduled on next weekend.
... here the part "next weekend" seems getting repeated.
As you are aware with my dedication and commitment towards my team and love for football
.... your start with "As" leaves this sentences incomplete. You need to add something to this to make it complete or you should not have "As";
You are aware of my love for football and my dedication and commitment towards our team.