I really need to get better
Tell me, what tips do I do to get better at chess?

Spend an hour a day doing tactics puzzles at chesstempo.
Work out the solution in your head before making a move. If you fail, understand the solution.

as finegold says; don't ask people for advice but do what you think you need to do to get better. the main word is do. mainly it's doing something related to chess which isn't playing on a daily basis.
I solve puzzles every day and play slow games (30+0)
got a few books I peak in them from time to time..

Two books that helped me were Simple Chess and Silman's End Games manual.
Most books are too complex for me.
Tell me, what tips do I do to get better at chess? I really need to get better and stop blundering materiel or mate.